fixup! test(cypress-talk): Add e2e test talk shares opening viewer and for secure view in talk shares

Author: juliusknorr

.github/workflows/cypress-e2e.yml

@@ -58,6 +58,11 @@ jobs:
           git submodule sync --recursive
           git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive --depth=1
 
+      - name: Register main git reference
+        run: |
+          main_app_ref="$(if [ "${{ matrix.server-versions }}" = "master" ]; then echo -n "main"; else echo -n "${{ matrix.server-versions }}"; fi)"
+          echo "main_app_ref=$main_app_ref" >> $GITHUB_ENV
+
       - name: Checkout viewer
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
@@ -69,7 +74,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           repository: nextcloud/spreed
-          ref: ${{ matrix.server-versions }}
+          ref: ${{ env.main_app_ref }}
           path: apps/spreed
 
       - name: Checkout files_pdfviewer