fix(mobile): space project destination title

[jetpham]

Fixes #8735

What Changed

Adds an explicit Add Project Destination title to the mobile clone destination route.

Why

Without a display title, React Navigation falls back to the internal AddProjectDestination route name. Android renders that fallback literally in the native header.

Verification

• Built and launched the development app on an Android 16 (API 36) emulator
• Opened the project destination route and confirmed the native header reads Add Project Destination
• vp run --filter @t3tools/mobile typecheck
• git diff --check

UI Changes

Before	After

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for the UI change
• This change does not involve animation or interaction

[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.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 49ac9b5a-16dd-4948-a3ca-cb80275cbda8

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

---

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

[macroscopeapp]

Approvability

Verdict: Approved at 1455acc

Macroscope's review found this PR approvable — This is a narrowly scoped mobile UI fix that gives an existing route an explicit spaced header title. It leaves navigation, linking, and underlying project-destination behavior unchanged.

^{You can add or adjust custom eligibility rules. Learn more.}