Fixes Microsoft/monaco-editor#254: The view should assume it is focused only if focusing the textarea succeeded

* Fixes #17584

* Remove logging statement

* Improve markdown Wrapping

Includes a few improvements to the markdown preview

* Use breakword by default to break up very long words
* When `editor.worWrap` is enabled, wrap code blocks inside of the html preview.
* Reverts https://github.com/Microsoft/vscode/commit/41467b74b7e486f3a5857d3cc0ab15d85a2b7a84 . This change is adding an 20px margin to the left of any html content. I believe the html content itself should be responsible for adding this padding and should normally fill the entire screen.
* Better centers markdown preview content

* Move padding to default webview style

* Remove padding change for now

* Prototype Using Commit Characters for JS and TS Completions

Part of #7326

Adds a prototype for using specific characters to complete TS/JS completion items automatically.

* Tune path completion items

* Disable dot commit in js files

* Don't complete on / in module names

* Add Go To Implementation Api

For #10806

Adds a new API for supporting  `go to implementation` command for languages. Implements an example for TS

* Rename

* Cleanup

Fixes #18393

Includes fixes for the terminal breaking when zooming VS Code.

Fixes #18415

Ensure vs-whitespace is normal weight

fixes #18195

fixes #18244