[gnome-builder/wip/gtk4-port] plugins/flatpak: give treeview a frame

[Christian Hergert <chergert src gnome org>]

commit bf678a9212e8c5ad93228ab497595a40e1e1735c
Author: Christian Hergert <chergert redhat com>
Date:   Tue May 24 12:48:47 2022 -0700

    plugins/flatpak: give treeview a frame
    
    We need a frame, even if it is a bit squared off for the moment.

 src/plugins/flatpak/gbp-flatpak-install-dialog.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/flatpak/gbp-flatpak-install-dialog.ui 
b/src/plugins/flatpak/gbp-flatpak-install-dialog.ui
index 53dd99e58..20f4c45f4 100644
--- a/src/plugins/flatpak/gbp-flatpak-install-dialog.ui
+++ b/src/plugins/flatpak/gbp-flatpak-install-dialog.ui
@@ -38,6 +38,7 @@
             </child>
             <child>
               <object class="GtkScrolledWindow">
+                <property name="has-frame">True</property>
                 <property name="visible">True</property>
                 <property name="margin_top">12</property>
                 <property name="vexpand">True</property>