Part of #34284

What

Add keyboard support for the "copy to clipboard" functionality

Why

Not all users interact with the color picker with a pointer device

A/C

• The DOM element that can be currently clicked to copy to clipboard should be flagged as a button, and have a meaningful label (e.g. click to copy to clipboard)
  • This should work keeping in mind the already present tooltip
• When the above mentioned DOM element has focus, pressing spacebar should copy the value to the clipboard