patch 8.2.1853: "to_f" is recognized at "topleft" modifier

Problem:    "to_f" is recognized at "topleft" modifier.
Solution:   Do not recognize modifer when "_" follows. (closes #7019)
diff --git a/src/version.c b/src/version.c
index 266c7c1..5aa3cf6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1853,
+/**/
     1852,
 /**/
     1851,