[Minor] UEFN Header color is set as the hover color for styling

This ticket refers to UEFN editor styling. As shown in the video, the header color is set as the hover color, which is not correct (as there is a hover color that is not used in the editor styling).

@Wertandrew Thank you for your feedback. While I cannot guarantee a response, I can confirm that this has been forwarded to the appropriate team.