[libhandy] preferences-group: Add accessibility relationships

[Alexander Mikhaylenko <alexm src gnome org>]

commit 03823336c35f2bc64e65f0d2108a1cdf377caae9
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Wed Jan 6 17:46:29 2021 +0100

    preferences-group: Add accessibility relationships

 src/hdy-preferences-group.ui | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/hdy-preferences-group.ui b/src/hdy-preferences-group.ui
index 81c35da4..30d2d26e 100644
--- a/src/hdy-preferences-group.ui
+++ b/src/hdy-preferences-group.ui
@@ -19,6 +19,9 @@
               <!-- Matching elementary class. -->
               <class name="h4"/>
             </style>
+            <accessibility>
+              <relation target="listbox_box" type="label-for"/>
+            </accessibility>
           </object>
         </child>
         <child>
@@ -38,6 +41,9 @@
           <object class="GtkBox" id="listbox_box">
             <property name="orientation">vertical</property>
             <property name="visible">True</property>
+            <accessibility>
+              <relation target="title" type="labelled-by"/>
+            </accessibility>
             <child>
               <object class="GtkListBox" id="listbox">
                 <property name="selection_mode">none</property>