patch 9.0.1619: the focus gained/lost escape sequences cause trouble

Problem:    The focus gained/lost escape sequences cause trouble for a
            terminal where Vim does not expect them.
Solution:   Always recognize the codes for focus gained/lost. (closes #12499)
diff --git a/src/version.c b/src/version.c
index 13888eb..90331ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1619,
+/**/
     1618,
 /**/
     1617,