fix: validate page tokens for better error codes #4570

Job	Run time
Generate SDKs	3m 23s
Run end-to-end tests (postgres)	49m 22s
Run end-to-end tests (cockroach)	52m 36s
Run tests and lints	4m 51s
Run Playwright end-to-end tests (postgres)	6m 31s
Run end-to-end tests (sqlite)	49m 37s
Run Playwright end-to-end tests (cockroach)	6m 32s
Run end-to-end tests (mysql)	49m 8s
Run Playwright end-to-end tests (sqlite)	6m 32s
Run Playwright end-to-end tests (mysql)	6m 8s
Build CLI docs	0s
Generate changelog	0s
Generate release	0s
Draft newsletter	0s
Render version schema	0s
Release SDKs	0s
Send newsletter	0s
Pending approval Slack notification	0s
	3h 54m 40s

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