fix stuck tooltips on macOS

native/Avalonia.Native/src/OSX/window.mm

@@ -1494,7 +1494,7 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
     NSRect rect = NSZeroRect;
     rect.size = newSize;
     
-    NSTrackingAreaOptions options = NSTrackingActiveAlways | NSTrackingMouseMoved | NSTrackingEnabledDuringMouseDrag;
+    NSTrackingAreaOptions options = NSTrackingActiveAlways | NSTrackingMouseMoved | NSTrackingMouseEnteredAndExited | NSTrackingEnabledDuringMouseDrag;
     _area = [[NSTrackingArea alloc] initWithRect:rect options:options owner:self userInfo:nullptr];
     [self addTrackingArea:_area];