[PWGLF] Code clean up and add 2nd leg mixing in v3

[skundu692]

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[vkucera]

Missing include

[alibuild]

Auto-approving on behalf of @skundu692.

[alibuild]

Error while checking build/O2Physics/o2 for 91a1cb3 at 2026-03-17 22:37:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1684:97: error: narrowing conversion of '(((double)(((lambdaspincorrderived*)this)->lambdaspincorrderived::ptMaxMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value - ((lambdaspincorrderived*)this)->lambdaspincorrderived::ptMinMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value)) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicPt.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1685:58: error: narrowing conversion of '((2.0e+0 * ((double)((lambdaspincorrderived*)this)->lambdaspincorrderived::v0etaMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value)) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicEta.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1686:25: error: narrowing conversion of '((2.0e+0 * TMath::Pi()) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicPhi.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1967:97: error: narrowing conversion of '(((double)(((lambdaspincorrderived*)this)->lambdaspincorrderived::ptMaxMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value - ((lambdaspincorrderived*)this)->lambdaspincorrderived::ptMinMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value)) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicPt.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1968:58: error: narrowing conversion of '((2.0e+0 * ((double)((lambdaspincorrderived*)this)->lambdaspincorrderived::v0etaMixBuffer.o2::framework::Configurable<float>::o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<float, o2::framework::kGeneric>::o2::framework::ConfigurableBase<float, o2::framework::kGeneric>.o2::framework::ConfigurableBase<float, o2::framework::kGeneric>::value)) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicEta.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
/sw/SOURCES/O2Physics/15433-slc9_x86-64/0/PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx:1969:25: error: narrowing conversion of '((2.0e+0 * TMath::Pi()) / ((lambdaspincorrderived*)this)->lambdaspincorrderived::cfgKinematicBins.lambdaspincorrderived::<unnamed struct>::nKinematicPhi.o2::framework::Configurable<double>::o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>.o2::framework::ConfigurablePolicyConst<double, o2::framework::kGeneric>::o2::framework::ConfigurableBase<double, o2::framework::kGeneric>.o2::framework::ConfigurableBase<double, o2::framework::kGeneric>::value)' from 'double' to 'float' [-Werror=narrowing]
ninja: build stopped: subcommand failed.

Full log here.