fix(ios): retry startup diagnostics overlay when scene unavailable

[shenhualxt901152]

Summary\n- fix startup diagnostics overlay presentation to avoid getting stuck when no active UIWindowScene is available at timeout moment\n- only mark diagnostics as presented after overlay is actually shown\n- add pending-reason retry on app foreground/active lifecycle\n- keep logs copy/share overlay behavior\n\n## Verification\n- xcodebuild Release (iphoneos) build: PASS\n- xcodebuild Debug (iphonesimulator, iPhone 16 Pro 18.4) build: PASS\n- simctl install + launch on booted simulator: PASS\n- startup logs confirmed top container and diagnostics overlay presented\n- xcodebuild test: N/A (scheme App not configured for test action)\n

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on this repository. Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}