E2E: temporary time limit bump

[phyllis-sy-wu]

WHY are these changes introduced?

With per-test store creation (next PR in stack), each test that uses app dev now creates and tears down a dev store. This adds ~30s per test, pushing the total suite time over the previous 20-minute Playwright globalTimeout on CI with 1 worker.

WHAT is this pull request doing?

• Bumps globalTimeout from 20 min to 30 min in playwright.config.ts
• Bumps BROWSER_TIMEOUT.long from 5s to 15s in setup/constants.ts to give browser interactions more room on slow CI runners

Both are temporary — will be reduced when parallel workers (5 workers) are enabled in a future PR, which cuts total suite time significantly.

How to test your changes?

pnpm test:e2e
# Should complete within 30 min on CI without hitting globalTimeout

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing, so I've added a changelog entry with pnpm changeset add

[phyllis-sy-wu]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• E2E: per-test store isolation with robust teardown #7279
• E2E: temporary time limit bump #7282 👈 (View in Graphite)
• E2E: improve error context in assertions #7281
• E2E: one-time global auth before test start #7272
• main

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