Add coverage exclusions for uncoverable lines and files #1361

Job	Run time
ruff	6s
mypy	27s
sdist	1m 1s
parse_sdl (macos-latest, 3.2.16)	31s
parse_sdl (windows-latest, 3.2.16)	42s
pyodide	3m 7s
build-macos (cp310-*_universal2)	2m 20s
build-macos (pp310-*)	5m 32s
tox (ubuntu-latest)	2m 2s
linux-wheels (x86_64, pp310-manylinux*)	3m 46s
linux-wheels (aarch64, pp310-manylinux*)	3m 41s
linux-wheels (aarch64, cp310-manylinux*)	4m 15s
test-docs	2m 6s
linux-wheels (x86_64, cp310-manylinux*)	4m 9s
build (windows-latest, 3.10, x64)	2m 57s
build (windows-latest, pypy-3.10, x64)	3m 27s
build (windows-latest, 3.10, x86)	3m 43s
build (ubuntu-latest, 3.10, x64)	3m 53s
build (ubuntu-latest, pypy-3.10, x64)	3m 11s
publish	0s
	50m 56s

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