Fix react tests (#7077)

facebook/create-react-app#8689 is causing our
tests to fail in the CI pipeline. As the comments suggest, downgrading
to react-scripts 3.4.0 fixes the problem.

In addition, fix a test warning due to a missing id field.

Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>

web/ui/react-app/package.json

@@ -34,7 +34,7 @@
     "react-copy-to-clipboard": "^5.0.1",
     "react-dom": "^16.7.0",
     "react-resize-detector": "^4.2.1",
-    "react-scripts": "^3.4.0",
+    "react-scripts": "3.4.0",
     "react-test-renderer": "^16.9.0",
     "reactstrap": "^8.0.1",
     "sanitize-html": "^1.20.1",
@@ -71,7 +71,6 @@
     "@types/sinon": "^7.5.0",
     "@typescript-eslint/eslint-plugin": "2.x",
     "@typescript-eslint/parser": "2.x",
-    "babel-eslint": "10.x",
     "enzyme": "^3.10.0",
     "enzyme-adapter-react-16": "^1.15.1",
     "eslint": "6.x",

web/ui/react-app/src/pages/graph/PanelList.test.tsx

@@ -20,7 +20,7 @@ describe('PanelList', () => {
   });
 
   it('renders panels', () => {
-    const panelList = shallow(<PanelListContent {...({ panels: [{}] } as any)} />);
+    const panelList = shallow(<PanelListContent {...({ panels: [{ id: 'foo' }] } as any)} />);
     const panels = panelList.find(Panel);
     expect(panels.length).toBeGreaterThan(0);
   });