Fix v9 storybook workflows (#418)

Co-authored-by: Atishay Jain (from Dev Box) <[email protected]>

Author: AtishayMsft

.github/workflows/testCoverage_v9storybook.yml

@@ -67,6 +67,11 @@ jobs:
               with:
                 path: contrib_repo
 
+            - name: Install packages
+              run: |
+                cd contrib_repo/apps/plotly_examples
+                yarn
+
             - name: Run Playwright test script (with webServer)
               run: |
                 cd contrib_repo/apps/plotly_examples

.github/workflows/update_v9_storybook_snapshots.yml

@@ -1,4 +1,4 @@
-name: Update v9 test snapshots
+name: Update v9 storybook test snapshots
 
 on:
   schedule:
@@ -55,6 +55,11 @@ jobs:
               with:
                 path: contrib_repo
 
+            - name: Install packages
+              run: |
+                cd contrib_repo/apps/plotly_examples
+                yarn
+
             - name: Run Playwright test script (with webServer)
               run: |
                 cd contrib_repo/apps/plotly_examples