When using oneof parent fieldset have same id as child fieldset

[mikitabut]

Prerequisites

• I have searched the existing issues
• I understand that providing a SSCCE example is tremendously useful to the maintainers.
• I have read the documentation
• Ideally, I'm providing a sample JSFiddle, Codesandbox.io or preferably a shared playground link demonstrating the issue.

What theme are you using?

core

Version

5.24.13

Current Behavior

I'm expiriencing when using object with oneof property fieldset for object property is duplicated with inner one and in result I having warning in console https://www.chromium.org/developers/design-documents/create-amazing-password-forms/#follow-html-guidelines

Expected Behavior

Upper fieldset will have different id to avoid warnings

Steps To Reproduce

1. Use property with oneOf as in playground
2. Check element tree
3. You will see duplicated fieldset ids

Environment

- OS: Mac OS 15.7.1
- Node: 22.14.0
- npm: 10.9.2

Anything else?

Link to playground link

[heath-freenome]

@mikitabut Good catch. This will be fixed in v6