Add an option to control whether clicking the `FileField.Dragzone` opens the file picker

[Huliiiiii]

Is your feature request related to a problem? Please describe.
Currently, clicking on FileField.Dragzone automatically opens the native file picker. While this behavior is convenient in many cases, there are situations where developers may want to disable this.

Describe the solution you'd like
Add a new property such as openFilePickerOnClick.

<Dragzone openFilePickerOnClick={false} />

Additional context
If this feature request is accepted, I’d be glad to open a PR to implement it.

[vish9812]

The "disabled" property on FileField already handles this unless you want to open a non-native file picker.

[Huliiiiii]

I mean to make Dragzone still accept drag and drop but not accept click.