refactor(python): Fewer typing.no_type_check

[twoertwein]

Some of the code uses -> None for __init__: I put the change to require None in a separate commit to make it easy to revert if needed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.52%. Comparing base (5b25fb8) to head (c2dc2b5).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #16497   +/-   ##
=======================================
  Coverage   81.51%   81.52%           
=======================================
  Files        1410     1410           
  Lines      185032   185061   +29     
  Branches     2981     2982    +1     
=======================================
+ Hits       150829   150866   +37     
+ Misses      33687    33679    -8     
  Partials      516      516           

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[stinodego]

I don't want to add the flake8-annotations lint. MyPy already requires everything to have a type signature as we run it in strict mode.

__init__ needing to return None is something Guido van Rossom explicitly mentioned was clutter and I agree, so I wouldn't want to add those annotations.

The fixups of the no untyped def ignores and no_type_check decorator removals are welcome though!

[stinodego]

Thanks!