onRenderProcessGone was not overridden, so when the WebView sandboxed
renderer process crashed (e.g. during file upload of docx), Android
terminated the main app process as well (default return false behavior).
Now: return true to keep the host app alive, report the renderer crash
via BugCollect (reflection, no compile-time dependency), and reload the
page so the user is not stuck on a blank screen.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>