Revert "fixes #30323"

This reverts commit 062d65d1.

src/vs/workbench/parts/scm/electron-browser/scmViewlet.ts

@@ -343,13 +343,7 @@ class SourceControlView extends CollapsibleView {
 
 		this.list = new List(this.listContainer, delegate, renderers, {
 			identityProvider,
-			keyboardSupport: false,
-
-			// sad... we must do this because the list can be rerendered between a
-			// mousedown and the respective mouseup events. since the list isn't as
-			// cool as react (yet), it always removes all DOM nodes on rerender
-			// https://github.com/Microsoft/vscode/issues/30323
-			selectOnMouseDown: true
+			keyboardSupport: false
 		});
 
 		this.disposables.push(attachListStyler(this.list, this.themeService));