[gtk/wip/chergert/for-main] macos: set main window in addition to key

[Christian Hergert <chergert src gnome org>]

commit c818b1dd4c6fac1379bebb5f08470d3926534b1b
Author: Christian Hergert <christian hergert me>
Date:   Thu Mar 10 23:49:48 2022 -0800

    macos: set main window in addition to key
    
    If we are showing the window, we might also want to make it the main
    window for the application when shown.

 gdk/macos/GdkMacosWindow.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index 1967bd89e0..23b3f5a3f3 100644
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -266,6 +266,9 @@ typedef NSString *CALayerContentsGravity;
   else
     [self orderFront:self];
 
+  if (makeKey && [self canBecomeMainWindow])
+    [self makeMainWindow];
+
   inShowOrHide = NO;
 
   [self checkSendEnterNotify];