Readonly input-color-picker

[madsrasmussen]

Which exact UI Library version are you using? For example: 1.0.1 - don't just write v1.

1.9.0

Bug summary

The input-color-picker is missing a readonly mode.

Specifics

No response

Steps to reproduce

When the readonly attribute is set on the element nothing happens.

Expected result / actual result

When the input is set to readonly it should not be possible to update the value. It should be possible to interact with the input to read the value.

Storybook should have a story to showcase the readonly mode.

[bjarnef]

This one should be simplify enough to implement, when the following PRs has been reviewed/merged:
uui-color-area: #915
uui-color-swatch: #916
uui-color-slider: #917

and then also uui-color-swatches ... uui-input used on color picker already supports readonly.