Studio: Sync size calculator ignores database when all files are selected

[katinthehatsite]

Related issues

Fixes STU-1104

Proposed Changes

This PR ensure that the database size selection is always correctly displayed in the sync modal.

Testing Instructions

• Pull the changes from this branch
• Navigate to the Sync tab
• Connect a site from the Sync modal
• Click on the Push button
• Select all the files and the database
• Observe the number in the progress bar
• Deselect database
• Confirm that the number goes down
• Try selecting only specific files and database
• Test and confirm that the number goes down when you deselect database and goes up when you select it again

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[github-actions]

📊 Performance Test Results

Comparing b5839a3 vs trunk

site-editor

Metric	trunk	b5839a3	Diff	Change
load	9434.00 ms	9216.00 ms	-218.00 ms	🟢 -2.3%

site-startup

Metric	trunk	b5839a3	Diff	Change
siteCreation	13267.00 ms	14201.00 ms	+934.00 ms	🔴 7.0%
siteStartup	5958.00 ms	5971.00 ms	+13.00 ms	🔴 0.2%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change

[gcsecsey]

Thanks for improving this @katinthehatsite! 🙌

The changes look good to me and the calculation seems correct to me in all scenarios

CleanShot.2025-12-05.at.13.35.29.mp4

[gcsecsey]

I restarted the e2e tests because the failing Overview customize links › Block theme customize shortcut links › opens Navigation test seems flaky and irrelevant to these changes.

[katinthehatsite]

I restarted the e2e tests because the failing Overview customize links › Block theme customize shortcut links › opens Navigation test seems flaky and irrelevant to these changes.

Nice, thanks a lot 🙇