Fix showing windows for background apps under macOS Sonoma

Change implementation to use Sonoma-supported version of the application
activation call.

See wxWidgets#23893, wxWidgets#24003.

(cherry picked from commit 695ca04)

Author: csomor

docs/changes.txt

@@ -250,6 +250,10 @@ wxMSW:
 - Fix MSVS warning about redundant "const" in wx/itemid.h (#23590).
 - Fix spurious memory leak reports when using static CRT.
 
+wxOSX:
+
+- Fix showing windows for background apps under macOS Sonoma (#23893).
+
 
 3.2.3: (released 2023-10-10)
 ----------------------------

src/osx/cocoa/utils.mm

@@ -110,8 +110,9 @@ - (void)applicationDidFinishLaunching:(NSNotification *)notification
             activate = true;
         }
 
-        if ( activate )
-            [NSApp activateIgnoringOtherApps: YES];
+        if ( activate ) {
+            [[NSRunningApplication currentApplication] activateWithOptions: NSApplicationActivateIgnoringOtherApps];
+        }
     }
 }