Improve npm pack pattern and test script detection

Co-authored-by: yi-nuo426 <218099172+yi-nuo426@users.noreply.github.com>

Author: Copilot

.github/workflows/test-meshery-integration.yml

@@ -36,7 +36,8 @@ jobs:
         working-directory: sistent
         run: |
           npm pack
-          echo "SISTENT_PACKAGE=$(ls *.tgz)" >> $GITHUB_ENV
+          SISTENT_PACKAGE=$(ls sistent-sistent-*.tgz | head -n 1)
+          echo "SISTENT_PACKAGE=$SISTENT_PACKAGE" >> $GITHUB_ENV
 
       - name: Checkout Meshery UI
         uses: actions/checkout@v6
@@ -62,7 +63,7 @@ jobs:
       - name: Run Meshery UI Tests
         working-directory: meshery/ui
         run: |
-          if grep -q '"test"' package.json; then
+          if grep -q '"test"\s*:' package.json; then
             npm run test -- --passWithNoTests
           else
             echo "No tests found in Meshery UI, skipping test step"