Update SQLite database integration to v3.0.0-rc.8

[wojtekn]

Related issues

• Related to https://github.com/WordPress/sqlite-database-integration/releases/tag/v3.0.0-rc.8

How AI was used in this PR

Claude Code bumped the pinned SQLite integration version and verified the new GitHub release exposes the expected asset. I reviewed the change and tested it locally via npm install.

Proposed Changes

• Updates the bundled WordPress SQLite database integration plugin from v3.0.0-rc.7 to v3.0.0-rc.8, so Studio sites run on the latest SQLite driver with its upstream fixes and improvements.

Testing Instructions

• Run npm install (which triggers the postinstall download of wp-files/) and confirm wp-files/sqlite-database-integration reflects the v3.0.0-rc.8 release.
• Start a site and verify core operations (site boot, admin, basic DB reads/writes) work as expected.

Pre-merge Checklist

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

[wpmobilebot]

📊 Performance Test Results

Comparing d1433fc vs trunk

app-size

Metric	trunk	d1433fc	Diff	Change
App Size (Mac)	1372.96 MB	1372.98 MB	+0.02 MB	⚪ 0.0%

site-editor

Metric	trunk	d1433fc	Diff	Change
load	1075 ms	1042 ms	33 ms	⚪ 0.0%

site-startup

Metric	trunk	d1433fc	Diff	Change
siteCreation	6531 ms	6556 ms	+25 ms	⚪ 0.0%
siteStartup	2388 ms	2384 ms	4 ms	⚪ 0.0%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change (<50ms diff)