Improve atomic delete

skip hidden directories in load task, and return soon if path not exist
in atomicDelete

carry of #3233

Closes #3233

Signed-off-by: Ace-Tang <aceapril@126.com>
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

runtime/v2/manager.go

@@ -214,6 +214,10 @@ func (m *TaskManager) loadTasks(ctx context.Context) error {
 			continue
 		}
 		id := sd.Name()
+		// skip hidden directories
+		if len(id) > 0 && id[0] == '.' {
+			continue
+		}
 		bundle, err := LoadBundle(ctx, m.state, id)
 		if err != nil {
 			// fine to return error here, it is a programmer error if the context