Better Try Me button (#6587)

**Problem:**
The try me button opens the empty project.

**Fix:**
The try me button clones the hydrogen demo project.

Author: balazsbajorics

.github/workflows/pull-requests.yml

@@ -255,8 +255,7 @@ jobs:
           issue-number: ${{ github.event.pull_request.number }}
           edit-mode: replace
           body: |
-            ## [Try me](https://${{ secrets.STAGING_SERVER }}/p/?accessLevel=public&branch_name=${{ steps.extract_branch.outputs.branch }})
-
+            ## [Try me](https://${{ secrets.STAGING_SERVER }}/p/?accessLevel=public&clone=concrete-utopia/hydrogen-editions-24&branch_name=${{ steps.extract_branch.outputs.branch }})
   performance-test:
     name: Run Performance Tests
     if: false # TODO restore / revamp this! (Temporarily disabled)