Update changeset checker

.github/workflows/check-changeset.yml

@@ -60,13 +60,40 @@ jobs:
             - name: Extract PR Number Artifact
               run: unzip pr-number.zip
 
-            - name: Get Authenticated User Info
+            - name: 💬 Remove Existing Changeset Comment
               uses: actions/[email protected]
               with:
-                github-token: ${{ secrets.GITHUB_TOKEN }}
+                github-token: ${{ env.GH_TOKEN }}
                 script: |
-                    const userInfo = await github.users.getAuthenticated();
-                    console.log("Username:", userInfo.data.login);
+                    const fs = require('fs');
+                    const PR_NUMBER = Number(fs.readFileSync('./PR_NUMBER', 'utf8').trim());
+                    const REPO_OWNER = context.repo.owner;
+                    const REPO_NAME = context.repo.repo;
+
+                    // Fetch all comments on the pull request.
+                    const comments = await github.issues.listComments({
+                        owner: REPO_OWNER,
+                        repo: REPO_NAME,
+                        issue_number: PR_NUMBER,
+                    });
+
+                    console.log("COMMENTS_URL: https://api.github.com/repos/" + REPO_NAME + "/issues/" + PR_NUMBER + "/comments");
+
+                    for (const comment of comments.data) {
+                        console.log("COMMENT_OWNER: " + comment.user.login);
+
+                        // Identify the changeset comment by its heading.
+                        if (comment.body.includes("🦋 Changeset detected") || comment.body.includes("⚠️ No Changeset found")) {
+                            console.log("COMMENT_ID_TO_DELETE: " + comment.id);
+
+                            // Remove the changeset comment using the comment ID.
+                            await github.issues.deleteComment({
+                                owner: REPO_OWNER,
+                                repo: REPO_NAME,
+                                comment_id: comment.id,
+                            });
+                        }
+                    }
 
             - name: 💬 Add Changeset Comment
               uses: actions/[email protected]