refactor(Icons): Replaces custom icons with Ant Design 5 icons (#32112)

Replace custom icons with Ant Design 5 icons to standardize the icon

superset-frontend/src/explore/components/DatasourcePanel/DatasourcePanel.test.tsx

@@ -228,7 +228,7 @@ test('should render a warning', async () => {
   };
   render(<DatasourcePanel {...newProps} />, { useRedux: true, useDnd: true });
   expect(
-    await screen.findByRole('img', { name: 'alert-solid' }),
+    await screen.findByRole('img', { name: 'warning' }),
   ).toBeInTheDocument();
 });