Test

✨ Add `model_fields_optional` to convert inherited fields to Optional #3587

Job	Run time
test (ubuntu-latest, 3.13, highest)	31s
test (ubuntu-latest, 3.14, highest)	31s
test (macos-latest, 3.14, highest)	36s
test (ubuntu-latest, 3.10, lowest-direct)	25s
test (windows-latest, 3.12, lowest-direct)	1m 25s
test (windows-latest, 3.14, highest)	55s
test (macos-latest, 3.13, highest)	39s
test (macos-latest, 3.11, highest)	31s
alls-green	2s
coverage-combine	0s
	5m 35s

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