This reverts commit 0772a8fc.

This reverts commit 7a9dfd33.

Fixes #80677

* Added buildRegexParseError for better parsing error message

* Fixed message

* Review #1 changes

* Changed error message as per review #2

* Review #3 changes

* Review #4 changes

Fixes #80740

The original view in diff views uses a data uri instead of a resource on disk. Make sure our webview editors can register themselves to handle this case too

Fixes https://github.com/microsoft/vscode/issues/80644

so that most of it is in common