Improve drag&drop stability on windows

src/lib/platform/MSWindowsScreen.cpp

@@ -1878,6 +1878,7 @@ std::string& MSWindowsScreen::getDraggingFilename()
             SWP_SHOWWINDOW);
 
         // TODO: fake these keys properly
+        ARCH->sleep(.05f); // A tiny sleep here makes the DragEnter event on m_dropWindow trigger much more consistently
         fakeKeyDown(kKeyEscape, 8192, 1);
         fakeKeyUp(1);
         fakeMouseButton(kButtonLeft, false);