fix(maz-ui): MazPhoneNumberInput - formatting

[LouisMazel]

Issue

• #905

What kind of change does this PR introduce? (check at least one)

• [ ] Bug fix
• [ ] Feature
• [ ] Code style update
• [X] Refactor
• [ ] Dependencies
• [ ] Documentation
• [ ] Tests
• [ ] Build-related changes
• [ ] Other, please describe:

Does this PR introduce a breaking change? (check one)

• [ ] Yes
• [X] No