vim-patch:8.2.0274: hang with combination of feedkeys(), Ex mode and :global

Problem:    Hang with combination of feedkeys(), Ex mode and :global.
            (Yegappan Lakshmanan)
Solution:   Add the pending_exmode_active flag.
9e2bcb5d23

src/nvim/getchar.c

@@ -2475,6 +2475,11 @@ static int vgetorpeek(bool advance)
           }
           tc = c;
 
+          // return 0 in normal_check()
+          if (pending_exmode_active) {
+            exmode_active = true;
+          }
+
           // no chars to block abbreviations for
           typebuf.tb_no_abbr_cnt = 0;