[Bug]: Incorrect graalpy exit code when a script is passed via stdin

[gershnik]

Describe the bug

graalpy returns 0 exit code when a script that does sys.ext(<non-zero>) is passed via stdin.
It works correctly when the same script is passed via -c

Operating system

macOS

CPU architecture

ARM64

GraalPy version

GraalPy 3.12.8 (Oracle GraalVM Native 25.0.2)

JDK version

No response

Context configuration

No response

Steps to reproduce

% graalpy <<'EOF'
import sys
sys.exit(42)
EOF
echo $?
0

or

>>> script='''
... import sys
... sys.exit(42)
... '''
>>> result = subprocess.run([sys.executable], input=script, encoding='utf-8')
>>> print(result.returncode)
0

Expected behavior

Non-zero exit code (42 in the example above) should be returned

Stack trace

Additional context

No response