fix(checkbox): remove the required attribute from individual checkboxes as soon as 1 checkbox is checked

[acd02]

TASK:#2205

Description, Motivation and Context

When a CheckboxGroup is marked as required, we should remove the required attribute from individual checkboxes as soon as one checkbox is checked.

Types of changes

• [ ] 🛠️ Tool
• [x] 🪲 Bug fix (non-breaking change which fixes an issue)
• [ ] ✨ New feature (non-breaking change which adds functionality)
• [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] 🧾 Documentation
• [ ] 📷 Demo
• [ ] 🧪 Test
• [ ] 🧠 Refactor
• [ ] 💄 Styles

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.63%. Comparing base (cef5c53) to head (bea7ccf). Report is 10 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2206 +/- ## ======================================= Coverage 97.63% 97.63% ======================================= Files 749 749 Lines 5885 5888 +3 Branches 2107 2078 -29 ======================================= + Hits 5746 5749 +3 Misses 137 137 Partials 2 2 ```

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[Powerplex]

Thanks. I checked and HTML required attribute is not supported. Instead everywhere it is suggested to use JS to manage it, so the fix is aligned with that.