Automatic dark mode support based on theme variant

[mlopezFC]

Feature proposal

If the dark mode theme variant is applied to the current page, it should affect also the color mode support of the component.

Describe solution expectations

If the dark mode is set on the Vaadin view by using the annotation or programmatic approach, the component should automatically change to dark mode.

Additional information

No response

[mlopezFC]

We discussed this and made the decision to eliminate the dataColorMode getter/setter and completely rely on Vaadin theme handling mechanism.