Tested recomppiling VSCode with TS2.3. This fixes a few issues that were discovered, including workarounds for:

* https://github.com/Microsoft/TypeScript/issues/15184
* https://github.com/Microsoft/TypeScript/issues/15185

For debugging purposes and transparency.

Fix https://github.com/Microsoft/monaco-editor/issues/417. Safari 10.1 breaks visibility inheritence.

Fixes #24209

**Bug**
Currently, for the js/ts references code lens, even if there are zero references you can click on the lens. This display an empty peek view

**Fix**
Allow code lenses to only register a title for the lens with no actual backing command

[theme] rename editorFindWidgetBackground to editorWidgetBackground, add editorWidgetShadow and use in findOptionsWidget

fixes #24534

related to #20290