show the number of hidden frames (Show N more frames)

#50334

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

@@ -554,8 +554,8 @@ class CallStackRenderer implements IRenderer {
 	}
 
 	private renderShowMore(data: ILabelTemplateData, element: IStackFrame[]): void {
-		data.label.textContent = nls.localize('showMoreStackFrames', "Show More Stack Frames");
-		if (element && element.length && element.every(sf => sf.source && sf.source.origin === element[0].source.origin)) {
+		data.label.textContent = nls.localize('showMoreStackFrames', "Show {0} More Stack Frames", element.length);
+		if (element.every(sf => sf.source && sf.source.origin === element[0].source.origin)) {
 			data.label.textContent += ` ${element[0].source.origin}`;
 		}
 	}