Fix overlay migration regressions

[tannerlinsley]

Evidence

Merged PR #1205 left two user-visible overlay migration regressions in current main:

• Both deploy success dialogs render countdown text such as 3state... instead of 3s....
• DrawerHeader already renders a Radix h2, but CartDrawer passes another h2 as its title, producing invalid nested heading markup.

The findings are recorded in unresolved review threads on #1205. Repeated title and body searches found no issue or PR owning these exact regressions. Open PR #1123 touches the cart as part of an older broad primitive migration, but it does not apply this current fix and is not an owner for the countdown regression.

Impact

• Restores readable deploy redirect feedback.
• Restores one valid accessible heading for the cart drawer.

Validation

• pnpm test
• TypeScript and type-aware lint pass.
• 479 tests total, 478 passed, 1 environment-gated docs smoke test skipped.
• git diff --check

Risk

Low. This changes two literal countdown suffixes and the inner cart title element from h2 to span; the outer Radix title remains the accessible h2.

Source: #1205

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	5d2487d	Commit Preview URL Branch Preview URL	Sep 01 2026, 03:37 PM