feat: add viewport size configuration for same-height interactive elements scenario

Refs: #7460

Author: deleonio

packages/tools/visual-tests/tests/sample-app.routes.js

@@ -494,6 +494,10 @@ ROUTES.set('scenarios/same-height-of-all-interactive-elements', {
 	axe: {
 		skipFailures: false,
 	},
+	viewportSize: {
+		width: 4000,
+		height: 0,
+	},
 });
 
 /* Focus tests */