Add support for context-only resources (#1405) #3623

Job	Run time
checks / readme-snippets	11s
checks / pre-commit	20s
checks / test (3.11, lowest-direct, windows-latest)	2m 5s
checks / test (3.12, lowest-direct, ubuntu-latest)	48s
checks / test (3.11, highest, windows-latest)	2m 31s
checks / test (3.13, lowest-direct, windows-latest)	2m 3s
checks / test (3.13, highest, windows-latest)	1m 58s
checks / test (3.12, lowest-direct, windows-latest)	2m 54s
checks / test (3.13, lowest-direct, ubuntu-latest)	41s
checks / test (3.10, highest, ubuntu-latest)	46s
checks / test (3.10, lowest-direct, ubuntu-latest)	43s
checks / test (3.13, highest, ubuntu-latest)	43s
checks / test (3.11, lowest-direct, ubuntu-latest)	42s
checks / test (3.11, highest, ubuntu-latest)	42s
checks / test (3.10, highest, windows-latest)	2m 1s
checks / test (3.12, highest, ubuntu-latest)	48s
checks / test (3.12, highest, windows-latest)	3m 6s
checks / test (3.10, lowest-direct, windows-latest)	2m 3s
	25m 5s

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