[Fix] Fix ARC signing after fixing another bug in it...

lualib/lua_auth_results.lua

@@ -49,7 +49,10 @@ local default_settings = {
   add_smtp_user = true,
 }
 
-local exports = {}
+local exports = {
+  default_settings = default_settings
+}
+
 local local_hostname = rspamd_util.get_hostname()
 
 local function gen_auth_results(task, settings)

src/plugins/lua/arc.lua

@@ -91,10 +91,7 @@ local settings = {
 }
 
 -- To match normal AR
-local ar_settings = {
-  add_smtp_user = true,
-  stop_chars = ';'
-}
+local ar_settings = auth_results.default_settings
 
 local function parse_arc_header(hdr, target)
   -- Split elements by ';' and trim spaces