TextInput如何取消默认聚焦效果

@Entry 
@Component  
struct Index { 
   controller: TextInputController = new TextInputController() 
  
   build() { 
     Row() { 
       TextInput({ 
         placeholder: 'wait input...', 
         text: '', 
         controller: this.controller 
       }) 
       Button('placeholder') 
         .defaultFocus(true) 
     } 
   } 
 }

@Entry  
@Component 
struct Index { 
   controller: TextInputController = new TextInputController() 
   
   build() { 
     Row() { 
       TextInput({ 
         placeholder: 'wait input...', 
         text: '', 
         controller: this.controller 
       }) 
       Text('placeholder') 
         .focusable(true) 
         .defaultFocus(true) 
     } 
   } 
 }