Fixes #66772

#66702

Experimentally mark preferred code actions with a star while we come up with better UX for this

Part of #62110

Use the more generic name as suggested in https://github.com/Dart-Code/Dart-Code/issues/1393. This makes the intent of the field more clear and also allows us to extend the concept of preferred code actions to refactorings and other classes of code actions

Experimentally also allows a `preferred` value for `apply` when configuring code aciton keyboard shortcuts. This applies the preferred code action returned from the list of code actions returned

refactor terminalInstance.ts

[themes] Add ability to reload themes without restarting the editor

Fancy list/tree navigation

Update node-pty, enable conpty for Windows 18309+

Fixes #66158