Further WF improvements

.github/workflows/close-discussion.yaml

@@ -102,6 +102,8 @@ jobs:
                 }
               `;
 
+              //
+              try {
                 const discussionResponse = await graphqlWithAuth(discussionQuery, {
                   owner,
                   repo,
@@ -113,6 +115,10 @@ jobs:
                   console.log("Failed to fetch discussion GraphQL ID.");
                   return;
                 }
+              } catch (error) {
+                console.error("Discussion not found or error occurred while fetching discussion:", error);
+                return;
+              }
 
               // Post comment
               const commentMutation = `