`SystemError` on `__classdict__`/`__conditional_annotations__` in class-scope inlined comprehensions

[StanFromIreland]

Bug report

Bug description:

Found by OSS Fuzz in #491105000.

>>> class i: [__classdict__ for x in y]
SystemError: _PyST_GetScope(name='__classdict__') failed: unknown scope in unit <module> (93973616364240); symbols: {'i': 4098}; locals: {}; globals: {}

>>> class i: [__conditional_annotations__ for x in y]
SystemError: _PyST_GetScope(name='__conditional_annotations__') failed: unknown scope in unit <module> (94200568314576); symbols: {'i': 4098}; locals: {}; globals: {}

We need to expand the fix for __class__ (fedbf77), I will open a PR shortly.

CPython versions tested on:

3.14, CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-145701: Fix __classdict__ & __conditional_annotations__ in class-scope inlined comprehensions #145702
• [3.14] gh-145701: Fix __classdict__ & __conditional_annotations__ in class-scope inlined comprehensions (GH-145702) #145710
• [3.13] gh-145701: Fix __classdict__ & __conditional_annotations__ in class-scope inlined comprehensions (GH-145702) #145711

[gpshead]

thanks!