Do not request minimum side bar width

src/resources/ui/iridium-window.ui

@@ -114,7 +114,6 @@
                   <object class="GtkScrolledWindow">
                     <property name="visible">True</property>
                     <property name="hexpand">True</property>
-                    <property name="min-content-width">200</property>
                     <child>
                       <object class="GtkListBox" id="note_list">
                         <property name="visible">True</property>