tests

Improve feature toggling exception for type offsets #534

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	22s
Tests (8.1, ubuntu-latest, prefer-stable)	22s
Tests (8.1, macos-latest, prefer-lowest)	1m 8s
Tests (8.1, macos-latest, prefer-stable)	1m 24s
Tests (8.1, windows-latest, prefer-lowest)	1m 17s
Tests (8.1, windows-latest, prefer-stable)	1m 7s
Tests (8.2, ubuntu-latest, prefer-lowest)	22s
Tests (8.2, ubuntu-latest, prefer-stable)	14s
Tests (8.2, macos-latest, prefer-lowest)	1m 10s
Tests (8.2, macos-latest, prefer-stable)	1m 15s
Tests (8.2, windows-latest, prefer-lowest)	42s
Tests (8.2, windows-latest, prefer-stable)	40s
Tests (8.3, ubuntu-latest, prefer-lowest)	21s
Tests (8.3, ubuntu-latest, prefer-stable)	22s
Tests (8.3, macos-latest, prefer-lowest)	1m 16s
Tests (8.3, macos-latest, prefer-stable)	1m 10s
Tests (8.3, windows-latest, prefer-lowest)	43s
Tests (8.3, windows-latest, prefer-stable)	43s
	14m 38s

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