[CI] Do not mark JUnit reports as failed checks (#28861) (#28871)

Co-authored-by: Nemanja Glumac <31325167+nemanjaglumac@users.noreply.github.com>

.github/actions/test-driver/action.yml

@@ -30,3 +30,4 @@ runs:
         reporter: java-junit
         list-suites: failed
         list-tests: failed
+        fail-on-error: false

.github/workflows/backend.yml

@@ -146,6 +146,7 @@ jobs:
         reporter: java-junit
         list-suites: failed
         list-tests: failed
+        fail-on-error: false
 
   be-tests:
     needs: files-changed
@@ -183,6 +184,7 @@ jobs:
         reporter: java-junit
         list-suites: failed
         list-tests: failed
+        fail-on-error: false
 
   be-tests-stub:
     needs: files-changed