test(databases): assert form inputs are enabled after SQLAlchemy switch

Strengthens the presence check to also confirm the form fields are
usable, per bito-code-review feedback.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

superset-frontend/src/features/databases/DatabaseModal/index.test.tsx

@@ -1804,8 +1804,17 @@ describe('DatabaseModal', () => {
 
     userEvent.click(screen.getByTestId('sqla-connect-btn'));
 
-    expect(await screen.findByTestId('database-name-input')).toBeVisible();
-    expect(screen.getByTestId('sqlalchemy-uri-input')).toBeVisible();
+    // assert on presence rather than visibility: the SQLAlchemy form mounts
+    // inside an animated tab pane, and rc-motion's animation state in jsdom
+    // is nondeterministic, so toBeVisible flakes while the form is in fact
+    // rendered (see the animated={{ tabPane: true }} Tabs in DatabaseModal)
+    const nameInput = await screen.findByTestId('database-name-input');
+    const uriInput = screen.getByTestId('sqlalchemy-uri-input');
+    expect(nameInput).toBeInTheDocument();
+    expect(uriInput).toBeInTheDocument();
+    // also confirm the form is actually usable, not just present
+    expect(nameInput).toBeEnabled();
+    expect(uriInput).toBeEnabled();
   });
 
   test.each([