feat: add `ClientRequestContext` type alias for client-side handlers … #463

Job	Run time
checks / readme-snippets	11s
checks / pre-commit	40s
checks / test (3.10, locked, ubuntu-latest)	57s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 16s
checks / test (3.11, locked, ubuntu-latest)	49s
checks / test (3.10, locked, windows-latest)	2m 26s
checks / test (3.11, lowest-direct, ubuntu-latest)	49s
checks / test (3.14, lowest-direct, windows-latest)	2m 30s
checks / test (3.13, lowest-direct, ubuntu-latest)	53s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
checks / test (3.13, locked, windows-latest)	2m 26s
checks / test (3.12, locked, ubuntu-latest)	53s
checks / test (3.12, locked, windows-latest)	4m 10s
checks / test (3.13, locked, ubuntu-latest)	44s
checks / test (3.11, lowest-direct, windows-latest)	2m 43s
checks / test (3.12, lowest-direct, windows-latest)	4m 9s
checks / test (3.14, locked, windows-latest)	4m 26s
checks / test (3.10, lowest-direct, ubuntu-latest)	52s
checks / test (3.13, lowest-direct, windows-latest)	2m 59s
checks / test (3.14, locked, ubuntu-latest)	2m 23s
checks / test (3.11, locked, windows-latest)	2m 39s
checks / test (3.10, lowest-direct, windows-latest)	2m 55s
all-green	4s
	42m 55s

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