chore: Support multiple values for automation message content (#7871)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/mixins/automations/methodsMixin.js

@@ -199,6 +199,12 @@ export default {
             values: condition.values[0],
           };
         }
+        if (inputType === 'comma_separated_plain_text') {
+          return {
+            ...condition,
+            values: condition.values.join(','),
+          };
+        }
         return {
           ...condition,
           query_operator: condition.query_operator || 'and',