Improve Webview Error Reporting with a local fallback and "Report a Problem" support

[tnaum-ms]

This is a follow-up to PR #2520

The current implementation provides a function that a webview can call to display error messages via tRPC support. However, there are two areas for improvement:

1. Local Fallback Mechanism:

   • In cases where the tRPC call fails, error messages are not displayed using the VS Code API as intended.
   • Add a fallback mechanism within the webview to locally display error messages if the tRPC call fails.

2. "Report a Problem" Integration:

   • Add support for the "report a problem" functionality available in the API.
   • This will allow users to easily report issues directly from the webview when an error occurs.