vim-patch:8.0.0302 NA (#7264)

(NA: Nvim removed the ability to set termcodes directly.)

Problem:    Cannot set terminal key codes with :let.
Solution:   Make it work.

e353c402e6

src/nvim/version.c

@@ -650,7 +650,7 @@ static const int included_patches[] = {
   305,
   // 304,
   // 303,
-  // 302,
+  // 302, NA
   // 301,
   300,
   // 299,