vim-patch:8.2.3966: when using feedkeys() abbreviations may be blocked

Problem:    When using feedkeys() abbreviations may be blocked.
Solution:   Reset tb_no_abbr_cnt when running out of characters.
            (closes vim/vim#9448)
b37a65e4bf

src/nvim/getchar.c

@@ -2304,6 +2304,10 @@ static int vgetorpeek(bool advance)
             c = ESC;
           }
           tc = c;
+
+          // no chars to block abbreviations for
+          typebuf.tb_no_abbr_cnt = 0;
+
           break;
         }