feat(multi-action-button): align component with Fusion DS

[mihai-albu-sage]

Proposed behaviour

The following props have been deprecated: align, subtext, buttonType, isWhite, width
The tokens have been aligned with the Fusion DS tokens
Support has been added for dividers through <MultiActionButtonDivider/> component
Default value for position has been changed to right
The following props have been added:
fullWidth - set the menu to match the width of the trigger button.
menuWidth - allow override of the default menu width
iconOnly - displays only the button's icon, hiding its text.

Current behaviour

Component is not aligned with Fusion DS.

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