Bug - MenuGroup - does not support Node elements in label

[karelhala]

Describe the problem
When using Menu component ant its MenuGroup we aren't able to pass React.Node elements to it.

How do you reproduce the problem?

<MenuGroup label={<div>FooBar</div>}>
  <MenuList>
    <MenuItem to="#" itemId={1}> Link 1 </MenuItem>
  </MenuList>
</MenuGroup>

Expected behavior
UI renders group with labeled element. Preferably not within h1 tag. This is mostly for styling the group on your own.

Is this issue blocking you?
No.

What is your product and what release date are you targeting?
HCC