Custom directive implementing controlValueAccessor does not trigger writeValue if the formControl has been updated by another controlValueAccessor

### Which @angular/* package(s) are the source of the bug?

forms

### Is this a regression?

No

### Description

I've created a custom directive implementing controlValueAccessor and added it to two html input elements.

The writeValue function is not called if the input value is provided using [formControl] and the value is updated through the registerOnChange callback.

The writeValue is instead correctly called if the input value is provided by [(ngModel)] instead of [formControl]

```
Export class customDirective implements controlValueAccessor ...

With ngModel works fine

With formControl there's the issue

```

### Please provide a link to a minimal reproduction of the bug

https://stackblitz.com/edit/angular-ivy-a2loir?file=src%2Fapp%2Fapp.component.html

### Please provide the exception or error you saw

_No response_

### Please provide the environment you discovered this bug in

_No response_

### Anything else?

_No response_

從連結的 StackBlitz 重現開始，並查看 @angular/forms 中的 ControlValueAccessor 實作，比較 [formControl] 和 [(ngModel)] 的繫結路徑。追蹤兩個共用相同值的控制項對 registerOnChange 和 writeValue 的呼叫，然後新增或更新覆蓋率，讓重現行為保持一致，並在表單控制項變更時呼叫 writeValue。

由索引模型根據 Issue 內容生成。