[gtk/wip/exalm/image-button: 2/4] test: Use more appropriate back/forward icons

[Alexander Mikhaylenko <alexm src gnome org>]

commit 5d59415c2d0550de14e8dcd80f91cf9928781f1a
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sun May 9 20:52:48 2021 +0500

    test: Use more appropriate back/forward icons

 tests/testsplitheaders.ui   | 4 ++--
 tests/teststackedheaders.ui | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/tests/testsplitheaders.ui b/tests/testsplitheaders.ui
index 867b5277ba..0662c8cf62 100644
--- a/tests/testsplitheaders.ui
+++ b/tests/testsplitheaders.ui
@@ -30,13 +30,13 @@
                 </style>
                 <child>
                   <object class="GtkButton">
-                    <property name="label">&lt;</property>
+                    <property name="icon-name">go-previous-symbolic</property>
                     <property name="valign">center</property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkButton">
-                    <property name="label">&gt;</property>
+                    <property name="icon-name">go-next-symbolic</property>
                     <property name="valign">center</property>
                   </object>
                 </child>
diff --git a/tests/teststackedheaders.ui b/tests/teststackedheaders.ui
index 6112f77de9..981553110f 100644
--- a/tests/teststackedheaders.ui
+++ b/tests/teststackedheaders.ui
@@ -32,7 +32,7 @@
               <object class="GtkHeaderBar">
                 <child type="start">
                   <object class="GtkButton" id="back_btn">
-                    <property name="label">&lt;</property>
+                    <property name="icon-name">go-previous-symbolic</property>
                     <property name="valign">center</property>
                   </object>
                 </child>