chore(server): fix missing indexer service on ci (#12291)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

- **Chores**
  - Standardized the naming of the search service to "indexer" in automated test workflows.
  - Ensured the "indexer" service is available in additional test jobs for improved consistency across workflows.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/workflows/copilot-test.yml

@@ -59,6 +59,10 @@ jobs:
         ports:
           - 1025:1025
           - 8025:8025
+      indexer:
+        image: manticoresearch/manticore:9.2.14
+        ports:
+          - 9308:9308
     steps:
       - uses: actions/checkout@v4
 
@@ -130,6 +134,10 @@ jobs:
         image: redis
         ports:
           - 6379:6379
+      indexer:
+        image: manticoresearch/manticore:9.2.14
+        ports:
+          - 9308:9308
     steps:
       - uses: actions/checkout@v4