When using `emboss=False` on a UI prop, if `property_split` was
enabled, all subsequent props in the same layout would also be
unembossed.
This is because of the way the emboss status was set.
When drawing a prop, the previous emboss status was stored in a
temporary variable `prev_emboss`. This status was retrieved from the
uiLayout (`this`), but restored to a `layout` uiLayout that could be
another one, because it could be reassigned in the mean while.
Instead the status should just be restored to `this`, otherwise the
layout can keep the same unembossed status for subsequent props.
Pull Request: https://projects.blender.org/blender/blender/pulls/145883
a8d366b48a