gh-148263: Fix refcount leak in weakref proxy operations

[prakashsellathurai]

• Issue: weakrefobject.c: UNWRAP ref leak with dead proxy #148263

Validation:

Reproducer scripts -> https://gist.github.com/prakashsellathurai/ea7ba0ec8a5cf049881464d34de31411

before (mainline )

(venv) PS C:\Users\Prakash\Documents\work\projects\mainline> .\python.bat ..\cpython\tmp\final-test.py
Running Debug|x64 interpreter...
binary +: leaked 10003 refs (~1/call)
ternary pow: leaked 10003 refs (~1/call)
compare ==: leaked 10003 refs (~1/call)

After this change

(venv) PS C:\Users\Prakash\Documents\work\projects\cpython> .\python.bat  .\tmp\final-test.py
Running Debug|x64 interpreter...
binary +: leaked 3 refs (~0/call)
ternary pow: leaked 3 refs (~0/call)
compare ==: leaked 3 refs (~0/call)

[bedevere-app]

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If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[picnixz]

I would prefer that we keep a macro form to calls. In addition, please follow PEP-7.