[3.11] gh-96052: codeop: fix handling compiler warnings in incomplete input (GH-96132) #96866
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Previously codeop.compile_command() emitted compiler warnings (SyntaxWarning or
DeprecationWarning) and raised a SyntaxError for incomplete input containing
a potentially incorrect code. Now it always returns None for incomplete input
without emitting any warnings.
(cherry picked from commit 426d72e)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com