[krb5-auth-dialog] prefs: Don't use deprecated GtkAlignment

[Guido Günther <guidog src gnome org>]

commit 8336f17068c3983bbaf954bdcbb7f61ff89462b0
Author: Guido Günther <agx sigxcpu org>
Date:   Wed Oct 12 20:49:57 2022 +0200

    prefs: Don't use deprecated GtkAlignment

 src/resources/ui/ka-preferences.ui | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)
---
diff --git a/src/resources/ui/ka-preferences.ui b/src/resources/ui/ka-preferences.ui
index 681f1ee..b7d865f 100644
--- a/src/resources/ui/ka-preferences.ui
+++ b/src/resources/ui/ka-preferences.ui
@@ -61,19 +61,14 @@
                                 <property name="label_xalign">0</property>
                                 <property name="shadow_type">none</property>
                                 <child>
-                                  <object class="GtkAlignment">
+                                  <object class="GtkEntry" id="principal_entry">
                                     <property name="visible">True</property>
-                                    <property name="top_padding">5</property>
-                                    <property name="left_padding">12</property>
-                                    <child>
-                                      <object class="GtkEntry" id="principal_entry">
-                                        <property name="visible">True</property>
-                                        <property name="tooltip-text" translatable="yes">The name of your 
Kerberos account. Leave blank to use your current username.</property>
-                                        <property name="invisible_char">●</property>
-                                        <property name="activates_default">True</property>
-                                        <property name="invisible_char_set">True</property>
-                                      </object>
-                                    </child>
+                                   <property name="margin-top">5</property>
+                                   <property name="margin-left">12</property>
+                                    <property name="tooltip-text" translatable="yes">The name of your 
Kerberos account. Leave blank to use your current username.</property>
+                                    <property name="invisible_char">●</property>
+                                    <property name="activates_default">True</property>
+                                    <property name="invisible_char_set">True</property>
                                   </object>
                                 </child>
                                 <child type="label">