debug repl: do not focus element on context menu

fixes #34066

src/vs/workbench/parts/debug/electron-browser/debugViewer.ts

@@ -209,7 +209,7 @@ export class BaseDebugController extends DefaultController {
 		this.contributedContextMenu = menuService.createMenu(menuId, contextKeyService);
 	}
 
-	public onContextMenu(tree: ITree, element: debug.IEnablement, event: ContextMenuEvent): boolean {
+	public onContextMenu(tree: ITree, element: debug.IEnablement, event: ContextMenuEvent, focusElement = true): boolean {
 		if (event.target && event.target.tagName && event.target.tagName.toLowerCase() === 'input') {
 			return false;
 		}
@@ -217,7 +217,9 @@ export class BaseDebugController extends DefaultController {
 		event.preventDefault();
 		event.stopPropagation();
 
-		tree.setFocus(element);
+		if (focusElement) {
+			tree.setFocus(element);
+		}
 
 		if (this.actionProvider.hasSecondaryActions(tree, element)) {
 			const anchor = { x: event.posx, y: event.posy };

src/vs/workbench/parts/debug/electron-browser/replViewer.ts

@@ -11,7 +11,7 @@ import { IActionItem } from 'vs/base/browser/ui/actionbar/actionbar';
 import * as dom from 'vs/base/browser/dom';
 import severity from 'vs/base/common/severity';
 import { IMouseEvent } from 'vs/base/browser/mouseEvent';
-import { ITree, IAccessibilityProvider, IDataSource, IRenderer, IActionProvider } from 'vs/base/parts/tree/browser/tree';
+import { ITree, IAccessibilityProvider, ContextMenuEvent, IDataSource, IRenderer, IActionProvider } from 'vs/base/parts/tree/browser/tree';
 import { ICancelableEvent } from 'vs/base/parts/tree/browser/treeDefaults';
 import { IExpressionContainer, IExpression } from 'vs/workbench/parts/debug/common/debug';
 import { Model, OutputNameValueElement, Expression, OutputElement, Variable } from 'vs/workbench/parts/debug/common/debugModel';
@@ -431,4 +431,8 @@ export class ReplExpressionsController extends BaseDebugController {
 
 		return true;
 	}
+
+	public onContextMenu(tree: ITree, element: any, event: ContextMenuEvent): boolean {
+		return super.onContextMenu(tree, element, event, false);
+	}
 }