Tech debt: avoid caching with some test context properties (#3379)

## Changes

This PR modifies some properties on the integration test context so that
they don't cache their return values; these properties are based on
internal mutable state and the current caching situation makes it
difficult to know if they are yielding the current value or an earlier
one that might no longer be correct.

### Tests

- existing integration tests

tests/integration/conftest.py

@@ -674,7 +674,7 @@ def with_dummy_grants_and_tacls(self):
             Grant,
         )
 
-    @cached_property
+    @property
     def created_databases(self) -> list[str]:
         created_databases: set[str] = set()
         for udf_info in self._udfs:
@@ -699,29 +699,17 @@ def created_databases(self) -> list[str]:
                 created_databases.add(grant.database)
         return list(created_databases)
 
-    @cached_property
+    @property
     def created_groups(self) -> list[str]:
-        created_groups = []
-        for group in self._groups:
-            if group.display_name is not None:
-                created_groups.append(group.display_name)
-        return created_groups
+        return [group.display_name for group in self._groups if group.display_name is not None]
 
-    @cached_property
+    @property
     def created_jobs(self) -> list[int]:
-        created_jobs = []
-        for job in self._jobs:
-            if job.job_id is not None:
-                created_jobs.append(job.job_id)
-        return created_jobs
+        return [job.job_id for job in self._jobs if job.job_id is not None]
 
-    @cached_property
+    @property
     def created_dashboards(self) -> list[str]:
-        created_dashboards = []
-        for dashboard in self._dashboards:
-            if dashboard.id is not None:
-                created_dashboards.append(dashboard.id)
-        return created_dashboards
+        return [dashboard.id for dashboard in self._dashboards if dashboard.id is not None]
 
     @cached_property
     def azure_service_principal_crawler(self) -> StaticServicePrincipalCrawler: