gh-109413: libregrtest: enable mypy's --strict-optional check on most files - #112586

gh-109413: libregrtest: enable mypy's --strict-optional check on most files#112586

AlexWaygood merged 6 commits into

python:mainpython/cpython:mainfrom

AlexWaygood:libregrtest-easy-strict-optionalAlexWaygood/cpython:libregrtest-easy-strict-optionalCopy head branch name to clipboard