Fix wrapping and alignment of Flatpak preference labels.

Fixes linuxmint/mint22.1-beta#21.

Author: mtwebster

resources/mintinstall.glade

@@ -47,9 +47,9 @@
           <object class="GtkLabel">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="halign">start</property>
             <property name="label" translatable="yes">Unverified Flatpaks represent a huge security risk</property>
             <property name="wrap">True</property>
+            <property name="xalign">0</property>
             <attributes>
               <attribute name="weight" value="bold"/>
             </attributes>
@@ -64,11 +64,9 @@
           <object class="GtkLabel">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="halign">start</property>
             <property name="label" translatable="yes">They are not officially approved by the developer of the application and could be maintained by anyone.</property>
             <property name="wrap">True</property>
-            <property name="wrap-mode">char</property>
-            <property name="max-width-chars">70</property>
+            <property name="xalign">0</property>
           </object>
           <packing>
             <property name="expand">False</property>
@@ -80,11 +78,9 @@
           <object class="GtkLabel">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="halign">start</property>
             <property name="label" translatable="yes">To avoid potential malware, it is strongly recommended not to use unverified Flatpaks.</property>
             <property name="wrap">True</property>
-            <property name="wrap-mode">char</property>
-            <property name="max-width-chars">70</property>
+            <property name="xalign">0</property>
           </object>
           <packing>
             <property name="expand">False</property>