fix: accept login_challenge in SPA verification flows #5203

Job	Run time
Generate SDKs	3m 31s
Run Playwright end-to-end tests (postgres)	6m 33s
Run Playwright end-to-end tests (cockroach)	7m 22s
Run tests and lints	30m 1s
Run end-to-end tests (postgres)	46m 39s
Run Playwright end-to-end tests (sqlite)	7m 11s
Run end-to-end tests (cockroach)	45m 11s
Run Playwright end-to-end tests (mysql)	7m 0s
Run end-to-end tests (sqlite)	44m 14s
Run end-to-end tests (mysql)	44m 1s
Build CLI docs	1m 27s
Generate changelog	0s
Generate release	0s
Release SDKs	0s
Render version schema	0s
Draft newsletter	0s
Pending approval Slack notification	0s
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	4h 3m 10s

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