fix(account): redirect expired sessions without error flash

[wangsijie]

Summary

• Automatically redirect expired Account Center sessions to sign-in behind the loading state.
• Keep the manual sign-in error action only as a fallback when automatic redirect fails.
• Add coverage for the expired session redirect flow.

Closes #8825

Testing

Unit tests

[github-actions]

COMPARE TO master

Total Size Diff 📈 +3.73 KB

Diff by File

Name	Diff
.changeset/soft-plums-return.md	📈 +116 Bytes
packages/account/src/pages/SessionExpired/index.test.tsx	📈 +2.92 KB
packages/account/src/pages/SessionExpired/index.tsx	📈 +713 Bytes

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Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.