patch 8.2.4498: using <Plug> with "noremap" does not work

Problem:    Using <Plug> with "noremap" does not work.
Solution:   Always remap <Plug>. (closes #9879, closes #9789)
diff --git a/src/version.c b/src/version.c
index 73b6af7..6131427 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4498,
+/**/
     4497,
 /**/
     4496,