Format time in compliance with Draft 7

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?

mui

Version

5.13.0

Current Behavior

The WidgetTime currently outputs time in the format 20:20:39 without including a timezone offset

Expected Behavior

According to JSON Schema Draft 7 compliance, the WidgetTime should output time with a timezone to be considered valid. The time format should include a timezone offset, something like 20:20:39+00:00

Steps To Reproduce

Use the playground

{
  "title": "Date and time widgets",
  "type": "object",
  "properties": {
    "time": {
      "type": "string",
      "format": "time"
    }
  }
}

Environment

- OS: MacOS 13.2.1
- Node: v16.20.2
- npm: 8.19.4

Anything else?

A quick solution is to override WidgetTime with a custom one.