Handle backups in the event of deleted workspaces

Fixes #16446

We want backups to always happen in case of a crash.

Fixes #12327

Notify the user that backups exist but have not been restored if the folder to be restored no longer exists (fixes #14705)

Fixes #15373

Fix null exception on runSelectedText Terminal Action for Webview

Hot exit empty workspace support

Fixes #16421

Adds a nullcheck before attempting to grab text from the active editor.

Just in case

apply decreaseIndent for ruby code