patch 8.2.1654: when job writes to hidden buffer current window is wrong

Problem:    When job writes to hidden buffer current window has display
            errors.  (Johnny McArthur)
Solution:   Use aucmd_prepbuf() instead of switch_to_win_for_buf().
            (closes #6925)
diff --git a/src/version.c b/src/version.c
index c22ec48..290d888 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1654,
+/**/
     1653,
 /**/
     1652,