fix: support context-only resources #2142

Job	Run time
checks / pre-commit	34s
checks / readme-snippets	10s
checks / test (3.11, lowest-direct, windows-latest)	2m 56s
checks / test (3.10, locked, windows-latest)	2m 36s
checks / test (3.11, lowest-direct, ubuntu-latest)	55s
checks / test (3.10, locked, ubuntu-latest)	57s
checks / test (3.10, lowest-direct, ubuntu-latest)	58s
checks / test (3.10, lowest-direct, windows-latest)	2m 47s
checks / test (3.11, locked, ubuntu-latest)	50s
checks / test (3.11, locked, windows-latest)	2m 35s
checks / test (3.12, lowest-direct, windows-latest)	3m 29s
checks / test (3.14, locked, windows-latest)	3m 14s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 16s
checks / test (3.12, locked, ubuntu-latest)	54s
checks / test (3.14, lowest-direct, windows-latest)	2m 18s
checks / test (3.13, locked, ubuntu-latest)	52s
checks / test (3.12, locked, windows-latest)	3m 30s
checks / test (3.13, lowest-direct, windows-latest)	2m 37s
checks / test (3.12, lowest-direct, ubuntu-latest)	56s
checks / test (3.14, locked, ubuntu-latest)	2m 24s
checks / test (3.13, locked, windows-latest)	2m 18s
checks / test (3.13, lowest-direct, ubuntu-latest)	56s
all-green	2s
	40m 4s

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