patch 9.1.0788: <CSI>27;<mod>u is not decoded to literal Escape in kitty/foot

Problem:  <CSI>27;<mod>u is not decoded to literal Escape in kitty/foot
Solution: disable XTerm modifyOtherKeys form 1 when the kitty protocol is enabled
          (Christian Fillion)

References:
- https://invisible-island.net/xterm/modified-keys.html
- https://sw.kovidgoyal.net/kitty/keyboard-protocol/
- e891abdd6a/kitty-keymap.h
- d31459b092/kitty/key_encoding.c (L193)

fixes: #15868
closes: #15881

Signed-off-by: Christian Fillion <contact@cfillion.ca>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    788,
 /**/
     787,
 /**/