Convert Renderer::Theme to generic Widget type

core/src/layout/flex.rs

@@ -59,7 +59,7 @@ impl Axis {
 /// padding and alignment to the items as needed.
 ///
 /// It returns a new layout [`Node`].
-pub fn resolve<Message, Renderer>(
+pub fn resolve<Message, Theme, Renderer>(
     axis: Axis,
     renderer: &Renderer,
     limits: &Limits,
@@ -68,7 +68,7 @@ pub fn resolve<Message, Renderer>(
     padding: Padding,
     spacing: f32,
     align_items: Alignment,
-    items: &[Element<'_, Message, Renderer>],
+    items: &[Element<'_, Message, Theme, Renderer>],
     trees: &mut [widget::Tree],
 ) -> Node
 where