[Inline dropdown & multi-select] Label container stays when label is hidden

[Kritvi-bhatia17]

Acceptance criteria

The label property only hides the label, but its container remains and still occupies space. This issue occurs specifically with the inline dropdown and multi-select components in the small size.

Tasks

• [ ] Add the "Show label" boolean property to the label margin.
• [ ] Check other variants, like the medium size inline dropdown for reference:

Figma link

Review

• [ ] Carbon designer
• [ ] Figme expert