Fix macOS title bar buttons not displaying properly.

In order for macOS windows to display buttons properly, we can't hide macOS native buttons, otherwise the title bar will appear on top of the buttons. The easiest manual solution is to refresh the window's flag, but for convenience, it's better to just not hide it.

Author: mentalfl0w

src/core/contexts/cocoawindowcontext.mm

@@ -330,13 +330,6 @@ void setSystemTitleBarVisible(const bool visible) {
             nswindow.movableByWindowBackground = NO;
             nswindow.movable = NO; // This line causes the window in the wrong position when
                                    // become fullscreen.
-            //  For some unknown reason, we don't need the following hack in Qt versions below or
-            //  equal to 6.2.4.
-#if (QT_VERSION > QT_VERSION_CHECK(6, 2, 4))
-            [nswindow standardWindowButton:NSWindowCloseButton].hidden = (visible ? NO : YES);
-            [nswindow standardWindowButton:NSWindowMiniaturizeButton].hidden = (visible ? NO : YES);
-            [nswindow standardWindowButton:NSWindowZoomButton].hidden = (visible ? NO : YES);
-#endif
         }
 
         static void replaceImplementations() {