wxGetKeyState() fails to return correct Alt state under X11 in some c…

…ases (at least in Cinnamon and KDE).

Btw, according to docs, it should not work under X11 at all.
See elfmz#2294 for details

WinPort/src/Backend/WX/wxMain.cpp

@@ -1304,7 +1304,7 @@ void WinPortPanel::OnKeyDown( wxKeyEvent& event )
 	// also it didnt cause problems yet
 	if ( (_key_tracker.Shift() && !event.ShiftDown())
 		|| ((_key_tracker.LeftControl() || _key_tracker.RightControl()) && !event.ControlDown())) {
-		if (_key_tracker.CheckForSuddenModifiersUp()) {
+		if ((!_key_tracker.Alt() || g_wayland) && _key_tracker.CheckForSuddenModifiersUp()) {
 			_exclusive_hotkeys.Reset();
 		}
 	}
@@ -1438,7 +1438,7 @@ void WinPortPanel::OnKeyUp( wxKeyEvent& event )
 #endif
 		wxConsoleInputShim::Enqueue(&ir, 1);
 	}
-	if (_key_tracker.CheckForSuddenModifiersUp()) {
+	if ((!_key_tracker.Alt() || g_wayland) && _key_tracker.CheckForSuddenModifiersUp()) {
 		_exclusive_hotkeys.Reset();
 	}
 	//event.Skip();