patch 8.2.4865: :startinsert right after :stopinsert may not work

Problem:    :startinsert right after :stopinsert does not work when popup menu
            is still visible.
Solution:   Use ins_compl_active() instead of pum_visible(). (closes #10352)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4865,
 /**/
     4864,
 /**/