SDL: Fixed SDL windows getting the maximized state after leaving fullscreen on macOS

SDL Commits
1 
From 031348d377dad25573f7cce1ee1c9385df1b05a7 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 28 Feb 2023 09:02:01 -0800
Subject: [PATCH] Fixed SDL windows getting the maximized state after leaving
 fullscreen on macOS

(cherry picked from commit 2df08fb1b27b721998a1380a2acdbe1494b5591e)
---
 src/video/cocoa/SDL_cocoawindow.m | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index a6d8ebf7d3c6..634f8553b466 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -817,7 +817,12 @@ - (void)windowDidResize:(NSNotification *)aNotification
     SDL_SendWindowEvent(window, SDL_WINDOWEVENT_MOVED, x, y);
     SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, w, h);
 
-    zoomed = [nswindow isZoomed];
+    /* isZoomed always returns true if the window is not resizable */
+    if ((window->flags & SDL_WINDOW_RESIZABLE) && [nswindow isZoomed]) {
+        zoomed = YES;
+    } else {
+        zoomed = NO;
+    }
     if (!zoomed) {
         SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESTORED, 0, 0);
     } else if (zoomed) {