gh-125893: Add type check for category argument in warnings.simplefilter and warnings.filterwarning

[hasrat17]

This PR addresses gh-125893 by adding a type check for the category argument in warnings.simplefilter and warnings.filterwarning,

Previously, warnings.filterwarnings correctly raised an error when the category argument was not a class, but warnings.simplefilter accepted invalid types without raising any error. This inconsistency could lead to confusion and improper warning filtering.

Both warnings.simplefilter and warnings.filterwarning were not raising any warnings while ran with python -O but now this is also handled.

$ ./amd64/python.exe -O -c "import warnings; warnings.resetwarnings(); warnings.simplefilter('default', category='Hello'); print(warnings.filters)" Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Users\hasra\OneDrive\Documents\opensource\cpython\Lib\warnings.py", line 182, in simplefilter raise TypeError("category must be a Warning subclass, " TypeError: category must be a Warning subclass, not 'str' 

./amd64/python.exe -O -c "import warnings; warnings.resetwarnings(); warnings.filterwarnings('ignore', category=Warning); warnings.filterwarnings('ignore', category='Hello'); print(warnings.filters)" Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Users\hasra\OneDrive\Documents\opensource\cpython\Lib\warnings.py", line 149, in filterwarnings raise TypeError("category must be a Warning subclass, " TypeError: category must be a Warning subclass, not 'str' 

[bedevere-app]

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[ZeroIntensity]

Sorry for the delay on the review. Please add a test case to test_warnings. You can refer to the devguide if you're unsure how to do that.

[ZeroIntensity]

We try to keep this sorted by last name. You should be closer to the top.

[ZeroIntensity]

This function is a bit expensive. It's likely worth doing something like this:

if not __debug__: return True

[ZeroIntensity]

Oh, also, please add a news entry.