Update bug_report.yaml

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -13,6 +13,8 @@ body:
 
         - **Before submitting a bug report**: Please check the [Issues](https://github.com/open-webui/open-webui/issues) and [Discussions](https://github.com/open-webui/open-webui/discussions) sections to see if a similar issue has already been reported. If unsure, start a discussion first, as this helps us efficiently focus on improving the project. Duplicates may be closed without notice. **Please search for existing issues and discussions.**
 
+        - Check for opened, **but also for (recently) CLOSED issues** as the issue you are trying to report **might already have been fixed!**
+
         - **Respectful collaboration**: Open WebUI is a volunteer-driven project with a single maintainer and contributors who also have full-time jobs. Please be constructive and respectful in your communication.
 
         - **Contributing**: If you encounter an issue, consider submitting a pull request or forking the project. We prioritize preventing contributor burnout to maintain Open WebUI's quality.