[gnome-system-monitor] Revert "data/interface: Use icon names instead of GtkImage in GtkButton"

[Robert Roth <robertroth src gnome org>]

commit 71ef58c8b98d730d4ce3923cb5be67ae71dd7a57
Author: Robert Roth <robert roth off gmail com>
Date:   Mon Jun 13 17:26:35 2022 +0300

    Revert "data/interface: Use icon names instead of GtkImage in GtkButton"
    
    This reverts commit 475e6f9a4b89d77245b24d581fdef02cbfe821ee.

 data/interface.ui | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/data/interface.ui b/data/interface.ui
index ea81fe71..0e611d2b 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -74,12 +74,18 @@
                     <property name="active">False</property>
                     <property name="valign">center</property>
                     <property name="margin-start">6</property>
-                    <property name="icon-name">edit-find-symbolic</property>
                     <property name="action-name">win.search</property>
                     <property name="action-target">@b false</property>
                     <style>
                       <class name="title-button"/>
                     </style>
+                    <child>
+                      <object class="GtkImage" id="search_image">
+                        <property name="visible">True</property>
+                        <property name="icon-size">1</property>
+                        <property name="icon-name">edit-find-symbolic</property>
+                      </object>
+                    </child>
                   </object>
                   <packing>
                     <property name="pack-type">end</property>
@@ -169,7 +175,13 @@
                             <property name="visible">True</property>
                             <property name="tooltip-text" translatable="yes">Show process 
properties</property>
                             <property name="action-name">win.process-properties</property>
-                            <property name="icon-name">document-properties-symbolic</property>
+                            <child>
+                              <object class="GtkImage" id="proc_properties_image">
+                                <property name="visible">True</property>
+                                <property name="icon-size">1</property>
+                                <property name="icon-name">document-properties-symbolic</property>
+                              </object>
+                            </child>
                           </object>
                           <packing>
                             <property name="pack-type">end</property>