calendar-row: Port to AdwActionRow

`AdwSwitchRow` doesn't allow us to add widgets before the switch as a suffix, which will be required for further use.

src/gui/calendar-management/calendar-row.ui

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <object class="AdwSwitchRow" id="row">
+  <object class="AdwActionRow" id="row">
     <property name="use-markup">False</property>
+    <property name="activatable">True</property>
     <child type="prefix">
       <object class="GtkImage" id="icon">
         <property name="pixel-size">24</property>
@@ -11,6 +12,12 @@
       </object>
     </child>
 
+    <child type="suffix">
+      <object class="GtkSwitch" id="switch">
+        <property name="valign">center</property>
+      </object>
+    </child>
+
     <child type="suffix">
       <object class="GtkImage">
         <property name="halign">end</property>

src/gui/calendar-management/gcal-calendars-page.c

@@ -75,6 +75,7 @@ make_calendar_row (GcalCalendarsPage *self,
   GcalManager *manager;
   GtkWidget *icon;
   GtkWidget *row;
+  GtkWidget *sw;
 
   manager = gcal_context_get_manager (self->context);
   get_source_parent_name_color (manager, gcal_calendar_get_source (calendar), &parent_name, NULL);
@@ -111,7 +112,8 @@ make_calendar_row (GcalCalendarsPage *self,
                            0);
 
   /* visibility switch */
-  g_object_bind_property (calendar, "visible", row, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
+  sw = GTK_WIDGET (gtk_builder_get_object (builder, "switch"));
+  g_object_bind_property (calendar, "visible", sw, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
 
   /* parent source name label */
   adw_action_row_set_subtitle (ADW_ACTION_ROW (row), parent_name);