Try to fix missing CursorHoldI events

This does not seem to break the use case mentioned in the comment: there
is no CursorHoldI event being fired after `CTRL-V` in insert mode.

Ref: neovim#3757 (comment)

src/nvim/edit.c

@@ -648,9 +648,6 @@ static int insert_execute(VimState *state, int key)
   InsertState *s = (InsertState *)state;
   s->c = key;
 
-  // Don't want K_EVENT with cursorhold for the second key, e.g., after CTRL-V.
-  did_cursorhold = true;
-
   if (p_hkmap && KeyTyped) {
     s->c = hkmap(s->c);  // Hebrew mode mapping
   }