[runserverobj] fix: map arguments from 'args' or 'arg'

webnotes/widgets/form/run_method.py

@@ -35,7 +35,7 @@ def runserverobj():
 
 	wrapper = None
 	method = webnotes.form_dict.get('method')
-	arg = webnotes.form_dict.get('args')
+	arg = webnotes.form_dict.get('args', webnotes.form_dict.get("arg"))
 	dt = webnotes.form_dict.get('doctype')
 	dn = webnotes.form_dict.get('docname')