Reference the application's icon file in the plist.
--- platform/xcode/macosx/love-macosx.plist.orig	2016-10-31 14:23:52.000000000 -0500
+++ platform/xcode/macosx/love-macosx.plist	2024-05-15 07:14:56.000000000 -0500
@@ -53,6 +53,8 @@
 	</array>
 	<key>CFBundleExecutable</key>
 	<string>love</string>
+	<key>CFBundleIconFile</key>
+	<string>OS X AppIcon</string>
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>