ColorPicker enableAlpha=true breakes after alpha set to 100%

[franmastromarino]

Description

Hello
We find this issue in the new colorpicker component

1. Create ColorPicker with enableAlpha=true
2. Set alpha to 100%
3. Change color

Step-by-step reproduction instructions

1. Create ColorPicker with enableAlpha=true
2. Set alpha to 100%
3. Change color

Screenshots, screen recording, code snippet

https://snipboard.io/qThJyr.jpg
https://gyazo.com/8ae83f32f30a6c1c70eb4b59090587ca

Environment info

WordPress version: 5.8.2
Gutenberg version: 11.8.1
Are all plugins except Gutenberg deactivated? Yes
Are you using a default theme (e.g. Twenty Twenty-One)? No

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[mirka]

Fixed in #36941