Bug - Form(FormGroup) - VoiceOver is not reading mandatory checkboxes and radio buttons as mandatory

Describe the problem
VoiceOver is not correctly announcing mandatory checkboxes and radio buttons as required within the FormGroup component even when isRequired prop is used.

How do you reproduce the problem?

• Navigate to a page using the Forms > Form component that includes required checkboxes or radio buttons(Add isRequired to FormGroup).

• Enable VoiceOver on macOS.

• Move focus to the group of checkbox or radio buttons including their label.

• Observe that VoiceOver does not announce them as "required" or "mandatory."

Expected behavior
VoiceOver should announce mandatory checkboxes and radio buttons as “required” when they are marked as such, ensuring that screen reader users are aware of which fields must be filled.

Screenshots

What is your environment?

• OS: iOS 5.7.1

• Browser: Chrome Version 141.0.7390.54 (Official Build)

Jira Issue: PF-2900

从 FormGroup 组件开始，使用 macOS 上的 VoiceOver 重现必需复选框或单选按钮的情况。检查 isRequired prop 如何传递给组及其标签，然后验证修复完成后 VoiceOver 会将这些控件播报为必需。