feat: re-enable legacy client IDs #1552

Job	Run time
Run OIDC conformity tests	1h 3m 34s
Generate SDKs	2m 5s
Run HSM tests	28m 18s
Run tests and lints	3m 3s
Run end-to-end tests (memory)	9m 10s
Run end-to-end tests (memory, --jwt)	9m 21s
Run end-to-end tests (postgres)	9m 8s
Run end-to-end tests (postgres, --jwt)	9m 12s
Run end-to-end tests (mysql)	9m 8s
Run end-to-end tests (mysql, --jwt)	8m 49s
Run end-to-end tests (cockroach)	9m 22s
Run end-to-end tests (cockroach, --jwt)	9m 22s
Build CLI docs	0s
Generate changelog	0s
Generate release	0s
Release SDKs	0s
Draft newsletter	0s
Render version schema	0s
Send newsletter	0s
Pending approval Slack notification	0s
	2h 50m 32s

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