Correctly use the base element in HighlightedLabel (#7397)

This PR updates the `HighlightedLabel` to correctly render its base
element, which is the one that receives the styling properties, instead
of rendering a new `LabelLike`.

Release Notes:

- N/A

crates/ui/src/components/label/label_like.rs

@@ -36,7 +36,7 @@ pub trait LabelCommon {
 
 #[derive(IntoElement)]
 pub struct LabelLike {
-    pub(crate) size: LabelSize,
+    size: LabelSize,
     line_height_style: LineHeightStyle,
     pub(crate) color: Color,
     strikethrough: bool,