Upgrade Playground and PHP-WASM packages to 3.0.22

[wojtekn]

Related issues

• Fixes STU-1001

Proposed Changes

• I propose upgrading Playground and PHP-WASM packages to 3.0.22.

Testing Instructions

• Confirm that creating, starting, and stopping the site works fine
• Confirm that the site created as "latest" will use 6.8.3 and not 6.9.0-RC2

Pre-merge Checklist

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

[github-actions]

📊 Performance Test Results

Comparing 10bfaca vs trunk

site-editor

Metric	trunk	10bfaca	Diff	Change
load	14620.00 ms	11888.00 ms	-2732.00 ms	🟢 -18.7%

site-startup

Metric	trunk	10bfaca	Diff	Change
siteCreation	23260.00 ms	24211.00 ms	+951.00 ms	🔴 4.1%
siteStartup	10997.00 ms	10055.00 ms	-942.00 ms	🟢 -8.6%

---

Results are median values from multiple test runs.

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

[epeicher]

All sites start as expected, and starting and stopping a site works fine. Also, the sites are created successfully with WordPress 6.8.9. LGTM!

Starting	WordPress version used	Stopping	Stopped