[Improvement] Implement Dropdown / Textfield UI review feedback

[m-m-mic]

• [x] All: Inline should be renamed to layout with "horizontal" and "vertical" as options
• [x] Dropdown: Color of error state label is wrong
• [x] Size of dropdown icon is too large, which is why the size of the dropdown/textfield is too large as well (height 44px instead of 40px)
• [x] Gap between vertical label and dropdown is missing
• [x] Dropdown menu is larger than dropdown input itself