[EuiPanel] Emotion styles not applied when rendering as button

[flash1293]

The panel component does not apply the emotion styles if it's rendering as button component:

styles passed in: https://github.com/elastic/eui/blob/main/src/components/panel/panel.tsx#L154

styles not passed in: https://github.com/elastic/eui/blob/main/src/components/panel/panel.tsx#L142

This is affecting at least these two places in Kibana:

Before:

After:

FYI @chandlerprall it would be great if this could be fixed for 8.4

[cchaos]

@flash1293 Are you sure the styles aren't being passed or is it a specifically/ cascade issue? Can you check the rendered styles?

[cchaos]

Nevermind, I see @miukimiu found and fixed the issue already.

[flash1293]

Yeah, they are not passed (nothing is in the DOM)