fix(menu-item): ensure consistent padding within menu-full-screen

[nuria1110]

When maxWidth is set on menu-item within menu-full-screen, paddings are insconsistent. This fix ensures paddings are consistent, and maxWidth should have no effect in a menu-full-screen.

fix #7078

Proposed behaviour

Paddings are consistent across all MenuItems.

Current behaviour

Inconsistent paddings on MenuItem within a MenuFullScreen when maxWidth is set.

Checklist

• Commits follow our style guide
• Related issues linked in commit messages if required
• Screenshots are included in the PR if useful
• All themes are supported if required
• Unit tests added or updated if required
• Playwright automation tests added or updated if required
• Storybook added or updated if required
• Translations added or updated (including creating or amending translation keys table in storybook) if required
• Typescript d.ts file added or updated if required
• Related docs have been updated if required

QA

• Tested in provided StackBlitz sandbox/Storybook
• Add new Playwright test coverage if required
• Carbon implementation matches Design System/designs
• UI Tests GitHub check reviewed if required

Additional context

Testing instructions

• See added test story "Menu Full Screen with Max Width"

[carbonci]

🎉 This PR is included in version 144.9.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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