Updated FontSizePicker on v-4.1.1

[ruhel241]

On version 4.1.1 we can't get the FontSizePicker from wp/components. We need to import from editor.

[jorgefilipecosta]

Hi @ruhel241, thank you a lot for you contribution.
It is still possible to use FontSizePicker from '@wordpress/components'. The components version should be used when the block just wants to allow the selection of specific set of FontSizes e.g: Small and Big, independtly of what is available gloabally, so the fontSizes array should be passed. The editor version uses the fontSizes provided by the theme or the default ones.
I noticed the documentation of FontSizePicker in '@wordpress/components' was outdated making it look like it does not work so I created a PR that updates the documentation: #11404.

[jorgefilipecosta]

As #11404 was already merged I'm closing this PR!
Thank you for making us notice a documentation problem and for trying to handle the issue.