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)

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[picnixz]

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

[prakashsellathurai]

while debugging few failed testcases multiple commits from main was reverted hence closing this pr and creating fresh pr only with my changes

[prakashsellathurai]

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

I fixed the PEP-7 issues but when i tried to change the function calls to macro, and removing the new proxy wrapper for unary /wrap method, mainline downstream testcases were failing/went flaky , in doing so created multiple reverts which clouded the current PR ,hence raising a new pr with clean changes here #148486