patch 8.2.1900: Vim9: command modifiers do not work

Problem:    Vim9: command modifiers do not work.
Solution:   Make most command modifiers work.
diff --git a/src/version.c b/src/version.c
index b4c6582..7aa2e10 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1900,
+/**/
     1899,
 /**/
     1898,