Fixes on HomeroomPage.test.js

flag=none

test plan:
  - Specs pass

qa risk: low

Change-Id: Ifebfb564138dd4790530806c9dbf6177c9e568aa
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/274366
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Davis Hyer <dhyer@instructure.com>
QA-Review: Davis Hyer <dhyer@instructure.com>
Product-Review: Davis Hyer <dhyer@instructure.com>

jest/jest-setup.js

@@ -126,7 +126,6 @@ const ignoredErrors = [
   /The prop `listDeveloperKeyScopesSet` is marked as required in `(Scopes|ScopesList)`/,
   /The prop `liveRegion` is marked as required in `(SecurityPanel|Whitelist)`/,
   /The prop `loading` is marked as required in `(HomeroomAnnouncementsLayout|LoadingWrapper)`/,
-  /The prop `loadingCards` is marked as required in `HomeroomPage`/,
   /The prop `ltiKeysSetLtiKey` is marked as required in `DeveloperKeyActionButtons`/,
   /The prop `name` is marked as required in `Avatar`/,
   /The prop `onChangeSubmission` is marked as required in `StudentContent`/,

ui/features/k5_dashboard/react/__tests__/HomeroomPage.test.js

@@ -25,6 +25,7 @@ describe('HomeroomPage', () => {
     visible: true,
     createPermissions: 'admin',
     loadingAnnouncements: false,
+    loadingCards: false,
     ...overrides
   })