chore(deps): bump @lexical/react from 0.27.2 to 0.39.0

Bumps [@lexical/react](https://github.com/facebook/lexical/tree/HEAD/packages/lexical-react) from 0.27.2 to 0.39.0.
- [Release notes](https://github.com/facebook/lexical/releases)
- [Changelog](https://github.com/facebook/lexical/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/lexical/commits/v0.39.0/packages/lexical-react)

---
updated-dependencies:
- dependency-name: "@lexical/react"
  dependency-version: 0.39.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

apps/webapp/package.json

@@ -29,7 +29,7 @@
     "@lexical/history": "0.27.2",
     "@lexical/list": "0.27.2",
     "@lexical/markdown": "0.27.2",
-    "@lexical/react": "0.27.2",
+    "@lexical/react": "0.39.0",
     "@lexical/rich-text": "0.27.2",
     "@mediapipe/tasks-vision": "0.10.22-rc.20250304",
     "@tanstack/react-table": "8.21.3",