* Fix onDiChangeTextEditorSelection firing when the editor is resized

**Bug**
onDidChangeTextEditorSelection is being fired when the editor window is resized

**Fix**
Make sure we do not refire this event if the selection in terms of the model has not changed

Fixes #32092

* Fix null deref

- search text
- index in the list

This reverts commit 94c4b25a.

* 🐛 include setext heading levels

* 📝 typo

* 💚 use `===`

Fixes #30414

* show progress indicator for implementation cmd #31666

* Move progressService to DefinitionAction

Integrate native module for WindowsShellHelper