fix: persist settings for websocket groups

server/im_http_test.go

@@ -304,6 +304,7 @@ type testGroupBusinessStore struct {
 	leftTopic         string
 	leftUID           types.Uid
 	updateSettingsErr error
+	getSettingsErr    error
 	updateMemberErr   error
 }
 
@@ -319,6 +320,9 @@ func (s *testGroupBusinessStore) CreateSettings(_ types.TenantID, settings *type
 }
 
 func (s *testGroupBusinessStore) GetSettings(_ types.TenantID, topic string) (*types.GroupSettings, error) {
+	if s.getSettingsErr != nil {
+		return nil, s.getSettingsErr
+	}
 	if s.settings != nil {
 		return s.settings, nil
 	}