Dashboards: Split GetDashboardVersions method (#49967)

* Split GetDashboarVersions method

* Add sqlstore dialect and tests

* Fix signature of PAtchPreference

* Add GetDialect to sqlstore and remove GetDashboardVersions

* Add GetDialect to db interface

* Implement List

* add deleted test function

* Remove GetDialect from sqlstore interface

* Remove deleted method from mock

* Refactor test

pkg/services/dashboardversion/dashverimpl/dashver.go

@@ -20,7 +20,8 @@ type Service struct {
 func ProvideService(db db.DB) dashver.Service {
 	return &Service{
 		store: &sqlStore{
-			db: db,
+			db:      db,
+			dialect: db.GetDialect(),
 		},
 	}
 }
@@ -63,3 +64,11 @@ func (s *Service) DeleteExpired(ctx context.Context, cmd *dashver.DeleteExpiredV
 	}
 	return nil
 }
+
+// List all dashboard versions for the given dashboard ID.
+func (s *Service) List(ctx context.Context, query *dashver.ListDashboardVersionsQuery) ([]*dashver.DashboardVersionDTO, error) {
+	if query.Limit == 0 {
+		query.Limit = 1000
+	}
+	return s.store.List(ctx, query)
+}