Remove idealSize usage from expanding components

[PavelHolec]

EDIT:

fixedSize modifier works fine only when the size of the component would be indeed smaller than provided size. But it is unusable in situations where long text and/or large accessibility font sizes make the component bigger, because it fixes the size of component no matter what is the the proposed parent size.

NOT DOING:

The idealSize modifier is useful for components that should have fixed size by default, but can be optionally made expandable (Tag).

But for components like Alert or Button, the fixedSize modifier seems to be enough to restrict the size in all variants, even for container components like Alert (containing expanding Button). There might have been an original reason for having it there, but after rechecking, it seems it is not needed there.

Ideally, we would not need the idealSize modifier at all, if this would achieve the same effect of telling the component that it should not fix its own size:

// Expanding Tag (the opposite of calling `.fixedSize()`)
Tag(..)
  .frame(maxWidth: .infinity)

// Default behaviour, fixed Tag
Tag(..)

For that, the component would need to have the knowledge of that and so far I found no way of doing that easily.