Added a possibility to use a formatter for error titles. Applied it for scaffolder template

Signed-off-by: Bogdan Nechyporenko <bnechyporenko@bol.com>

.changeset/plenty-singers-notice.md

@@ -0,0 +1,6 @@
+---
+'@backstage/core-components': patch
+'@backstage/plugin-scaffolder': patch
+---
+
+Add a possibility to use a formatter for on a warning panel. Applied it for a scaffolder template

packages/core-components/api-report.md

@@ -384,6 +384,7 @@ export type ErrorPanelClassKey = 'text' | 'divider';
 export type ErrorPanelProps = {
   error: Error;
   defaultExpanded?: boolean;
+  formatTitle?: string;
   title?: string;
 };
 

packages/core-components/src/components/WarningPanel/WarningPanel.test.tsx

@@ -15,7 +15,7 @@
  */
 
 import React from 'react';
-import { fireEvent, screen, waitFor } from '@testing-library/react';
+import { fireEvent, screen } from '@testing-library/react';
 import { renderInTestApp } from '@backstage/test-utils';
 import Typography from '@material-ui/core/Typography';
 import { WarningPanel, WarningProps } from './WarningPanel';