add AI tool usage notice to bug and feature request templates (#7523)

Signed-off-by: SungJin1212 <tjdwls1201@gmail.com>

Author: SungJin1212

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,6 +7,13 @@ assignees: ''
 
 ---
 
+**AI Tool Usage Notice**
+If you used an AI tool to help draft this issue,
+please make sure you have reviewed and validated all content before submitting.
+You are responsible for the accuracy and quality of everything in this report.
+Low-quality or unreviewed AI-generated submissions may be closed without further investigation.
+See our [Generative AI Contribution Policy](https://github.com/cortexproject/cortex/blob/master/GENAI_POLICY.md) for details.
+
 **Describe the bug**
 A clear and concise description of what the bug is.
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,6 +7,13 @@ assignees: ''
 
 ---
 
+**AI Tool Usage Notice**
+If you used an AI tool to help draft this issue,
+please make sure you have reviewed and validated all content before submitting.
+You are responsible for the accuracy and quality of everything in this request.
+Low-quality or unreviewed AI-generated submissions may be closed without further investigation.
+See our [Generative AI Contribution Policy](https://github.com/cortexproject/cortex/blob/master/GENAI_POLICY.md) for details.
+
 **Is your feature request related to a problem? Please describe.**
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]