gh-132413: Clear weakref to _datetime after modules are finalized #136152
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The
_datetimemodule has a weakref to the module itself, which is expected to be connected all its life. However,finalize_remove_modules()inpylifecycle.cshares the same weakref, then the GC clears it before finishing the module.The module should be cleared first, bypassing the GC once.
datetime.timedelta(possibly from datetime's Cdelta_new) #132413