Fix wrong message for group vulnerability report

ee/app/assets/javascripts/security_dashboard/graphql/queries/vulnerable_projects.query.graphql

@@ -2,7 +2,7 @@
 
 query group($fullPath: ID!) {
   group(fullPath: $fullPath) {
-    projects(includeSubgroups: true, hasVulnerabilities: true) {
+    projects(includeSubgroups: true) {
       nodes {
         ...Project
       }

ee/changelogs/unreleased/287631-fix-wrong-message-for-vulnerability-report.yml

+---
+title: Fix wrong message for group vulnerability report when no vulnerabilities in projects
+merge_request: 55464
+author:
+type: fixed