Revert "Fix: diff editor arrow click enables breakpoint " (microsoft#181040)

Author: hediet

src/vs/editor/browser/widget/diffEditorWidget.ts

@@ -623,7 +623,7 @@ export class DiffEditorWidget extends Disposable implements editorBrowser.IDiffE
 		}));
 
 		// Revert change when an arrow is clicked.
-		this._register(editor.onMouseUp(event => {
+		this._register(editor.onMouseDown(event => {
 			if (!event.event.rightButton && event.target.position && event.target.element?.className.includes('arrow-revert-change')) {
 				const lineNumber = event.target.position.lineNumber;
 				const viewZone = event.target as editorBrowser.IMouseTargetViewZone | undefined;

src/vs/editor/browser/widget/inlineDiffMargin.ts

@@ -190,7 +190,7 @@ export class InlineDiffMargin extends Disposable {
 			}
 		}));
 
-		this._register(editor.onMouseUp((e: IEditorMouseEvent) => {
+		this._register(editor.onMouseDown((e: IEditorMouseEvent) => {
 			if (!e.event.rightButton) {
 				return;
 			}