refactor: simplify migration to single query

pkg/migration/20240329170952.go

@@ -37,23 +37,8 @@ func init() {
 		Description: "Update default filter for list views to hide completed tasks",
 		Migrate: func(tx *xorm.Engine) error {
 
-			// Use ORM to get all project views
-			projectViews := []*projectView20240329170952{}
-			err := tx.Find(&projectViews)
-			if err != nil {
-				return err
-			}
-
 			// Update the filter for all list views to hide completed tasks unless the filter is already set
-			for _, view := range projectViews {
-				if view.ViewKind == 0 && view.Filter == "" {
-					view.Filter = "done = false"
-					_, err := tx.ID(view.ID).Update(view)
-					if err != nil {
-						return err
-					}
-				}
-			}
+			tx.Where("view_kind = ? AND filter = ?", 0, "").Cols("filter").Update(&projectView20240329170952{Filter: "done = false"})
 			return nil
 		},
 		Rollback: func(tx *xorm.Engine) error {