provide correct outcomesGroup.contextId prop type

flag=none

test plan:
  - specs pass

qa risk: low

Change-Id: If3632e2e0c9ed713606364ee2833a5dde95f8db5
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/274131
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Omar Soto-Fortuño <omar.soto@instructure.com>
QA-Review: Omar Soto-Fortuño <omar.soto@instructure.com>
Product-Review: Omar Soto-Fortuño <omar.soto@instructure.com>

jest/jest-setup.js

@@ -69,7 +69,6 @@ const ignoredErrors = [
   /Invalid prop `heading` of type `object` supplied to `Billboard`/, // https://instructure.atlassian.net/browse/QUIZ-8870
   /Invalid prop `headingAs` of value `h4` supplied to `Billboard`/,
   /Invalid prop `id` of type `number` supplied to `Option`/,
-  /Invalid prop `outcomesGroup.contextId` of type `number` supplied to `FindOutcomesView`, expected `string`/,
   /Invalid prop `returnFocusTo` of type `DeprecatedComponent` supplied to `(CourseHomeDialog|HomePagePromptContainer)`/,
   /Invalid prop `selectedDate` of type `date` supplied to `CanvasDateInput`/,
   /Invalid prop `shares\[0\].content_export.id` of type `number` supplied to `ReceivedTable`/,

ui/shared/outcomes/mocks/Management.js

@@ -975,7 +975,7 @@ export const findOutcomesMocks = ({
   outcomeIsImported = true,
   contextType = 'Account',
   contextId = '1',
-  outcomesGroupContextId = 1,
+  outcomesGroupContextId = '1',
   outcomesGroupContextType = 'Account',
   searchQuery = 'mathematics',
   outcomesCount = 25