patch 8.2.5020: using 'imstatusfunc' and 'imactivatefunc' breaks 'foldopen'

Problem:    Using 'imstatusfunc' and 'imactivatefunc' breaks 'foldopen'.
Solution:   Save and restore the KeyTyped flag. (closes #10479)
diff --git a/src/version.c b/src/version.c
index 9589d79..6a6f07d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5020,
+/**/
     5019,
 /**/
     5018,