为什么VoiceOver无法大声朗读SwiftUI DatePicker可访问性提示？

如何解决为什么VoiceOver无法大声朗读SwiftUI DatePicker可访问性提示？

我无法成功让VoiceOver朗读SwiftUI DatePicker实例的可访问性提示。我希望VoiceOver在启用辅助功能提示时会大声朗读辅助功能提示。

预期的辅助功能提示的本地化版本存储在Localizable.strings文件中：

/* 
  Localizable.strings
*/

"accessibility-hint" = "the date of the event";

可访问性提示的本地化版本用于视图模型：

/*
  viewmodel.swift
*/

let eventDatePickerAccessibilityHint = NSLocalizedString("accessibility-hint",comment: "").localizedCapitalized

视图模型的属性用于附加到View的SwiftUI DatePicker中：

/*
  View.swift
*/

Form {

    // Accessibility hint is read aloud for following Toggle
    Toggle(
        isOn: $viewmodel.eventIsAllDay.animation(),label: {
            Text(viewmodel.isAllDayLabelText)
        }
    )
    .accessibilityHint(viewmodel.isAllDayToggleAccessibilityHint)

    // Accessibility hint is not read aloud for following DatePicker
    DatePicker(
        viewmodel.eventDatePickerLabelText,selection: $viewmodel.eventDate,in: viewmodel.Now...,displayedComponents: [.date]
    )
    .accessibilityHint(viewmodel.eventDatePickerAccessibilityHint)

    // Accessibility hint is read aloud for following Button
    Button {
        viewmodel.save()
    } label: {
        Text(viewmodel.saveButtonTitle)
    }
    .disabled(viewmodel.disableSaveButton())
    .accessibilityHint(viewmodel.saveButtonAccessibilityHint)

}

在启用VoiceOver的情况下浏览视图时，VoiceOver会大声读取附近元素（例如Text，TextField，Toggle和Button的辅助功能提示。但是，VoiceOver不会大声朗读附加到同一视图内DatePicker实例的辅助功能提示。

为什么VoiceOver会大声读取某些元素（例如Text，TextField和Button的可访问性提示，而不大声朗读DatePicker的那些提示？

更新 我尝试使用以下修改，但是VoiceOver继续无视辅助功能提示：

DatePicker(
    selection: $viewmodel.eventDate,displayedComponents: [.date],label: {
        Text(viewmodel.eventDatePickerLabelText)
            .accessibilityHint("This does not work either.")
    }
)