Twenty Twenty: Button block forces All Capital letters

[ianbelanger]

Currently the button block in Twenty Twenty is forced to be All Caps. This should be changed so that the user can choose whether or not to use capital letters in a button.

Initially reported on GitHub by @paaljoachim: ​https://github.com/WordPress/gutenberg/issues/21144

[ianbelanger]

Removes text-transform: uppercase; from button blocks

[mukesh27]

@ianbelanger The patch 49710.diff is working fine for me in version 5.4-RC4-47505

[ianbelanger]

Thanks for testing @mukesh27, I'm going to get this committed

[ianbelanger]

In 47531:

Bundled Themes: Twenty Twenty Button block forces All Capital letters.

Removes text-transform: uppercase; from button blocks in order to give the user the option to have a button without All Capital letters.

Props mukesh27.
Fixes #49710.

[ianbelanger]

Reopening for backport

[ianbelanger]

Going to revert this commit after thinking about the change to current button blocks. Thanks to @joyously for bringing it to my attention. (​Slack conversation)

@kjellr suggested adding an optional button block style for buttons that are not All Caps. This is probably a better option.

[ianbelanger]

In 47534:

Bundled Themes: Twenty Twenty Button block forces All Capital letters - revert [47531].

Reverts [47531] to add text-transform: uppercase; back to button blocks.

Props joyously.
Fixes #49710.

[sabernhardt]

The optional block style could be added on #56104.