UBERF-12325: Add mongo warning for v7 (#9543)

Signed-off-by: Alexey Zinoviev <alexey.zinoviev@xored.com>

tests/docker-compose.override.yaml

@@ -2,6 +2,7 @@ services:
   account:
     environment:
       - DB_URL=${DB_PG_URL}
+      - PROCEED_V7_MONGO=false
   transactor:
     environment:
       - DB_URL=${DB_PG_URL}

tests/docker-compose.yaml

@@ -125,6 +125,7 @@ services:
       - ADMIN_EMAILS=admin,${PLATFORM_ADMIN_EMAILS}
       - WORKSPACE_LIMIT_PER_USER=100
       - DB_URL=${MONGO_URL}
+      - PROCEED_V7_MONGO=true
       - REGION_INFO=|America
       - TRANSACTOR_URL=ws://transactor:3334;ws://localhost:3334
       - STORAGE_CONFIG=${STORAGE_CONFIG}