Fix unlock background button color

Since dd1eae6 the background color of the unlock button is white

keycloak/themes/cryptomator/login/theme.properties

@@ -54,7 +54,7 @@ kcFormGroupHeader=
 ### main class used for all buttons
 kcButtonClass=w-full inline-flex justify-center px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm text-gray-500 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary [&:not(:last-child)]:mb-3
 ### classes defining priority of the button - primary or default (there is typically only one priority button for the form)
-kcButtonPrimaryClass=border-transparent text-white bg-primary hover:!bg-primary-l1
+kcButtonPrimaryClass=border-transparent text-white !bg-primary hover:!bg-primary-l1
 kcButtonDefaultClass=btn-default
 ### classes defining size of the button
 kcButtonLargeClass=!px-6 !py-3 text-lg