Add support for context-only resources (#1405) #3624

Job	Run time
checks / readme-snippets	13s
checks / pre-commit	14s
checks / test (3.10, lowest-direct, windows-latest)	2m 25s
checks / test (3.11, lowest-direct, windows-latest)	2m 6s
checks / test (3.10, lowest-direct, ubuntu-latest)	40s
checks / test (3.11, lowest-direct, ubuntu-latest)	44s
checks / test (3.10, highest, ubuntu-latest)	41s
checks / test (3.10, highest, windows-latest)	1m 59s
checks / test (3.12, lowest-direct, windows-latest)	2m 54s
checks / test (3.12, highest, ubuntu-latest)	46s
checks / test (3.11, highest, ubuntu-latest)	43s
checks / test (3.13, highest, ubuntu-latest)	44s
checks / test (3.13, lowest-direct, ubuntu-latest)	43s
checks / test (3.11, highest, windows-latest)	2m 4s
checks / test (3.12, highest, windows-latest)	2m 47s
checks / test (3.13, lowest-direct, windows-latest)	2m 0s
checks / test (3.13, highest, windows-latest)	2m 34s
checks / test (3.12, lowest-direct, ubuntu-latest)	44s
	25m 1s

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