Update workflow

.github/workflows/pr-test.yml

@@ -17,7 +17,6 @@ on:
 
 jobs:
   tests:
-    if: github.repository == 'mdn/content'
     runs-on: ubuntu-latest
     # Set the permissions to `read-all`, preventing the workflow from
     # any accidental write access to the repository.
@@ -48,22 +47,26 @@ jobs:
           # filter out files that are not markdown files
           GIT_DIFF_CONTENT=$(echo "${DIFF_DOCUMENTS}" | egrep -i "^files/.*\.(md)$" | xargs)
           echo "GIT_DIFF_CONTENT=${GIT_DIFF_CONTENT}" >> $GITHUB_ENV
+          echo Diff content:
+          echo "${GIT_DIFF_CONTENT}"
 
           # filter out files that are not attachments
           GIT_DIFF_FILES=$(echo "${DIFF_DOCUMENTS}" | egrep -i "^files/.*\.(png|jpeg|jpg|gif|svg|webp)$" | xargs)
           echo "GIT_DIFF_FILES=${GIT_DIFF_FILES}" >> $GITHUB_ENV
+          echo Diff files:
+          echo "${GIT_DIFF_FILES}"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Node.js environment
-        if: ${{ env.GIT_DIFF_CONTENT }}
+        if: ${{ env.GIT_DIFF_CONTENT }} || ${{ env.GIT_DIFF_FILES }}
         uses: actions/setup-node@v4
         with:
           node-version-file: ".nvmrc"
           cache: yarn
 
       - name: Install all yarn packages
-        if: ${{ env.GIT_DIFF_CONTENT }}
+        if: ${{ env.GIT_DIFF_CONTENT }} || ${{ env.GIT_DIFF_FILES }}
         run: yarn --frozen-lockfile
         env:
           # https://github.com/microsoft/vscode-ripgrep#github-api-limit-note