CORE-1352: Intermittent test failures in Rex (mostly after PRs are merged) (#2589)

* fix variable null

* run jira issue only in pull request

Author: jomcarvajal

.github/workflows/ci.yml

@@ -10,6 +10,7 @@ jobs:
   linked_issue:
     name: Jira
     runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
     steps:
     - uses: openstax/[email protected]
       with:

src/app/content/components/Page.spec.tsx

@@ -1288,7 +1288,7 @@ describe('Page', () => {
     state.navigation.hash = '#somehash';
     archiveLoader.mockPage(book, someHashPage, 'unused3');
 
-    const {root} = renderDomWithReferences();
+    const {root} = renderDomWithReferences({ html: someHashPage.content });
 
     let resolveImageLoaded: undefined | ((value?: void | PromiseLike<void> | undefined) => void);
     const allImagesLoadedPromise = new Promise<void>((resolve) => {
@@ -1301,11 +1301,6 @@ describe('Page', () => {
 
     (allImagesLoaded as any as jest.SpyInstance).mockReturnValue(allImagesLoadedPromise);
 
-    store.dispatch(actions.receivePage({
-      ...someHashPage,
-      references: [],
-    }));
-
     await new Promise((resolve) => setTimeout(resolve, 10));
     // deferred scroll execution (scrollToTarget uses setImmediate)
     await new Promise((resolve) => setImmediate(resolve));