Merged PR 439: #2641: Added a check for software health state in db service + tests

## Summary
Added a check in the database service process_sql method that checks if the Database Service is in a GOOD state (mainly so that the database service being in a fixed state returns an error)

## Test process
https://dev.azure.com/ma-dev-uk/PrimAITE/_git/PrimAITE/pullrequest/439?_a=files&path=/tests/integration_tests/system/test_database_on_node.py

https://dev.azure.com/ma-dev-uk/PrimAITE/_git/PrimAITE/pullrequest/439?_a=files&path=/tests/integration_tests/system/test_web_client_server_and_database.py

## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [X] written **tests** for any new functionality added with this PR
- [ ] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [ ] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code

#2641: Added a check for software health state in db service + tests

Related work items: #2641

src/primaite/simulator/system/services/database/database_service.py

@@ -197,7 +197,11 @@ class DatabaseService(Service):
             status_code = 503  # service unavailable
             if self.health_state_actual == SoftwareHealthState.OVERWHELMED:
                 self.sys_log.error(f"{self.name}: Connect request for {src_ip=} declined. Service is at capacity.")
-            if self.health_state_actual == SoftwareHealthState.GOOD:
+            if self.health_state_actual in [
+                SoftwareHealthState.GOOD,
+                SoftwareHealthState.FIXING,
+                SoftwareHealthState.COMPROMISED,
+            ]:
                 if self.password == password:
                     status_code = 200  # ok
                     connection_id = self._generate_connection_id()
@@ -244,6 +248,10 @@ class DatabaseService(Service):
             self.sys_log.error(f"{self.name}: Failed to run {query} because the database file is missing.")
             return {"status_code": 404, "type": "sql", "data": False}
 
+        if self.health_state_actual is not SoftwareHealthState.GOOD:
+            self.sys_log.error(f"{self.name}: Failed to run {query} because the database service is unavailable.")
+            return {"status_code": 500, "type": "sql", "data": False}
+
         if query == "SELECT":
             if self.db_file.health_status == FileSystemItemHealthStatus.CORRUPT:
                 return {