chore: release 5.0.0-alpha.20

Add release-as override to force version sync with Fable.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: dbrattli

release-please-config.json

@@ -3,6 +3,7 @@
   "packages": {
     ".": {
       "release-type": "simple",
+      "release-as": "5.0.0-alpha.20",
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "include-component-in-tag": false,