[service-checker] Fix the service-checker issue which is caused by PR…

…17836 (sonic-net#18109)

PR sonic-net#17836 added the container checking for database-chassis for Supervisor. But the related container_feature_dict[] is missing for the database-chassis. This causes the exception failure shows on Supervisor

Signed-off-by: mlok <marty.lok@nokia.com>

src/system-health/health_checker/service_checker.py

@@ -102,6 +102,7 @@ def get_expected_running_containers(self, feature_table):
 
         if device_info.is_supervisor():
             expected_running_containers.add("database-chassis")
+            container_feature_dict["database-chassis"] = "database"
         return expected_running_containers, container_feature_dict
 
     def get_current_running_containers(self):