docs: require a passing conformance test for new 2026-07-28 spec feat… #2451

Job	Run time
checks / pre-commit	36s
checks / readme-snippets	13s
checks / test (3.11, lowest-direct, windows-latest)	2m 21s
checks / test (3.10, locked, windows-latest)	2m 51s
checks / test (3.10, locked, ubuntu-latest)	1m 5s
checks / test (3.10, lowest-direct, windows-latest)	2m 39s
checks / test (3.12, lowest-direct, windows-latest)	3m 25s
checks / test (3.11, locked, windows-latest)	2m 34s
checks / test (3.11, locked, ubuntu-latest)	59s
checks / test (3.13, lowest-direct, windows-latest)	2m 39s
checks / test (3.12, locked, ubuntu-latest)	1m 3s
checks / test (3.12, locked, windows-latest)	3m 29s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.11, lowest-direct, ubuntu-latest)	58s
checks / test (3.13, locked, ubuntu-latest)	55s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.14, locked, ubuntu-latest)	2m 28s
checks / test (3.14, lowest-direct, windows-latest)	2m 2s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.14, locked, windows-latest)	3m 15s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 11s
checks / test (3.13, locked, windows-latest)	2m 37s
all-green	4s
	41m 2s

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