chore: Note about flow routes exclusion from Hilla layout (vaadin#3795)

* chore: Note about flow routes exclusion from Hilla layout

* Minor edits of added text.

---------

Co-authored-by: Russell J.T. Dyer <6652767+russelljtdyer@users.noreply.github.com>

Author: mshabarov

articles/flow/routing/layout.adoc

@@ -41,6 +41,8 @@ public class DefinedLayoutView extends Div {
 }
 ----
 
+Excluding Vaadin Flow routes from <<{articles}/getting-started/tutorial/hilla/layout#,Hilla layouts>> with `autoLayout = false` is not yet supported. See the related https://github.com/vaadin/hilla/issues/2385[GitHub issue] for details and discussions.
+
 
 === Defining a Layout in `@Route`
 
@@ -60,7 +62,7 @@ When using the <<route#,`@Route("path")`>> annotation to define a route, the com
 [role="since:com.vaadin:vaadin@V24.5"]
 === Layout Matching Routes
 
-To configure which routes a [annotationname]`@Layout` annotated [classname]`RouterLayout` handles, the prefix of the route's path can be given for the value. 
+To configure which routes a [annotationname]`@Layout` annotated [classname]`RouterLayout` handles, the prefix of the route's path can be given for the value.
 
 The example below gives a value of `/user`, which would match the routes `/user` and `/user/info`: