fixes #64233

* Completely hide tab close button when dirty state is highlighted in top border

* Use :not selector to avoid code duplication

The AppInsights.d.ts conflicts with our node typings

Try to better support handle of unicode in markdown by using a word definition that use unicode character class

Fixes #15177

Search results badge update (continues #61532 efforts)

Search: Improvements to clear button behavior

Fixes #27107 - User terminal's cwd for links

Fixes #64649

fixes #64741

ref #64597

vscode-xterm@3.10.0-beta1

- TypeScript 3.0 -> 3.1
- Layering refactors
- TypedArray new default buffer impl
- TypedArray buffer impl improvements
- TypedArray buffer recycling
- Cursor attribute alt buffer improvements
- wcwidth optimizations
- Fix missing control characters in parser
- Change parser to work mostly on codes not chars
- Null check on syncScrollArea
- areCoordInSelection fix
- Remove unused lineHeight param
- Don't create multiple AudioContexts
- Use deltaY instead of wheelDeltaY
- Crosshair cursor only when terminal is focused
- Addon lint/test fixes
- is256Color helper
- Remove IOffscreenCanvas concept
- Fix DOM renderer dimensions/scroll bar
- Support DOM renderer line height
- Don't create DOM renderer elements for empty cells at line end
- Set MouseHelper renderer when it's switched

Fixes #64121

fixes #57788

moving all openRecent calc to render