Split the registration request model from the registered-client record #3671

Job	Run time
checks / docs	1m 6s
checks / pre-commit	1m 4s
checks / readme-snippets	12s
checks / test (3.10, locked, windows-latest)	1m 47s
checks / test (3.12, lowest-direct, windows-latest)	1m 47s
checks / test (3.14, locked, ubuntu-latest)	1m 22s
checks / test (3.10, locked, ubuntu-latest)	1m 32s
checks / test (3.11, lowest-direct, windows-latest)	1m 43s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 23s
checks / test (3.12, locked, ubuntu-latest)	1m 37s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 32s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.10, lowest-direct, windows-latest)	2m 4s
checks / test (3.13, locked, windows-latest)	2m 12s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 29s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.11, locked, ubuntu-latest)	1m 21s
checks / test (3.14, lowest-direct, windows-latest)	1m 46s
checks / test (3.11, locked, windows-latest)	1m 54s
checks / test (3.14, locked, windows-latest)	1m 51s
checks / test (3.13, lowest-direct, windows-latest)	2m 2s
checks / test (3.12, locked, windows-latest)	1m 58s
checks / test (3.13, locked, ubuntu-latest)	1m 3s
all-green	3s
	35m 17s

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