Describe the bug
Alpha-enabled color-picker doesn't always run onChangeComplete function.

To reproduce
Steps to reproduce the behavior:

1. Go to the storybook for the Alpha-enabled Color Picker or insert a ColorPicker component inside React with alpha enabled.
2. Click on the Change color format button until you land on any other form than the Hexadecimal one.
3. If you change any of the values inside the form, the onChangeComplete function never runs.

Expected behavior:
onChangeComplete should be run when changing anything inside the form.

Editor version:

• WordPress version: 5.5.1
• Gutenberg Plugin
• Version 9.2.2 - Latest from the master branch on this repository

Desktop:

• OS: Ubuntu
• Browser Chrome
• Version 86.0.4240.75