Save change made in zone manager when apply

When clicking on "apply" in the zone manager, the change made should be saved the same way that it's saved when clicking on the "ok" button.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/17159

pcbnew/zone_manager/dialog_zone_manager.cpp

@@ -170,6 +170,22 @@ void DIALOG_ZONE_MANAGER::PostProcessZoneViewSelectionChange( wxDataViewItem con
 }
 
 
+void DIALOG_ZONE_MANAGER::SaveChange()
+{
+    for( ZONE_MANAGEMENT_BASE* zone_management :
+         std::list<ZONE_MANAGEMENT_BASE*>{ m_panelZoneProperties, m_zonesContainer.get() } )
+    {
+        zone_management->OnUserConfirmChange();
+    }
+
+    if( m_zoneInfo )
+    {
+        if( std::shared_ptr<ZONE_SETTINGS> zone = m_panelZoneProperties->GetZoneSettings() )
+            *m_zoneInfo = *zone;
+    }
+}
+
+
 void DIALOG_ZONE_MANAGER::GenericProcessChar( wxKeyEvent& aEvent )
 {
     aEvent.Skip();
@@ -249,17 +265,7 @@ void DIALOG_ZONE_MANAGER::SelectZoneTableItem( wxDataViewItem const& aItem )
 
 void DIALOG_ZONE_MANAGER::OnOk( wxCommandEvent& aEvt )
 {
-    for( ZONE_MANAGEMENT_BASE* zone_management :
-         std::list<ZONE_MANAGEMENT_BASE*>{ m_panelZoneProperties, m_zonesContainer.get() } )
-    {
-        zone_management->OnUserConfirmChange();
-    }
-
-    if( m_zoneInfo )
-    {
-        if( std::shared_ptr<ZONE_SETTINGS> zone = m_panelZoneProperties->GetZoneSettings() )
-            *m_zoneInfo = *zone;
-    }
+    SaveChange();
 
     aEvt.Skip();
 }
@@ -375,6 +381,8 @@ void DIALOG_ZONE_MANAGER::OnButtonApplyClick( wxCommandEvent& aEvent )
     if( m_isFillingZones )
         return;
 
+    SaveChange();
+
     m_isFillingZones = true;
     m_zonesContainer->FlushZoneSettingsChange();
     m_zonesContainer->FlushPriorityChange();

pcbnew/zone_manager/dialog_zone_manager.h

@@ -106,6 +106,8 @@ protected:
     void OnTableCharHook( wxKeyEvent& event ) override;
 
 private:
+    void SaveChange();
+
     void GenericProcessChar( wxKeyEvent& event );
 
     void OnIdle( wxIdleEvent& aEvent );