Allow Overlay::overlay to borrow Layout

core/src/overlay.rs

@@ -82,7 +82,7 @@ where
     /// Returns the nested overlay of the [`Overlay`], if there is any.
     fn overlay<'a>(
         &'a mut self,
-        _layout: Layout<'_>,
+        _layout: Layout<'a>,
         _renderer: &Renderer,
     ) -> Option<Element<'a, Message, Theme, Renderer>> {
         None

core/src/overlay/element.rs

@@ -130,7 +130,7 @@ where
 
     fn overlay<'a>(
         &'a mut self,
-        layout: Layout<'_>,
+        layout: Layout<'a>,
         renderer: &Renderer,
     ) -> Option<Element<'a, B, Theme, Renderer>> {
         self.content

core/src/overlay/group.rs

@@ -138,7 +138,7 @@ where
 
     fn overlay<'a>(
         &'a mut self,
-        layout: Layout<'_>,
+        layout: Layout<'a>,
         renderer: &Renderer,
     ) -> Option<overlay::Element<'a, Message, Theme, Renderer>> {
         let children = self