[master < ] Remove DbAccessor from non-transactional queries (#1201)

* Decouple non-transactional queries from DbAccessor
* Invalidate auth cache after AuthQuery

Co-authored-by: Gareth Lloyd <gareth.lloyd@memgraph.io>

tests/unit/dbms_interp.cpp

@@ -76,6 +76,8 @@ class TestAuthChecker : public memgraph::query::AuthChecker {
       const std::string & /*username*/, const memgraph::query::DbAccessor * /*db_accessor*/) const override {
     return {};
   }
+
+  void ClearCache() const override {}
 };
 
 std::filesystem::path storage_directory{std::filesystem::temp_directory_path() / "MG_test_unit_dbms_interp"};

tests/unit/query_trigger.cpp

@@ -47,6 +47,7 @@ class MockAuthChecker : public memgraph::query::AuthChecker {
   MOCK_CONST_METHOD2(GetFineGrainedAuthChecker,
                      std::unique_ptr<memgraph::query::FineGrainedAuthChecker>(
                          const std::string &username, const memgraph::query::DbAccessor *db_accessor));
+  MOCK_CONST_METHOD0(ClearCache, void());
 #endif
 };
 }  // namespace