Refactor file listing in PR workflow to use pagination

.github/workflows/pr.yml

@@ -59,12 +59,15 @@ jobs:
                           return;
                       }
 
-                      const { data: files } = await github.rest.pulls.listFiles({
-                          owner: context.repo.owner,
-                          repo: context.repo.repo,
-                          pull_number: context.issue.number,
-                          per_page: 100
-                      });
+                      const files = await github.paginate(
+                          github.rest.pulls.listFiles,
+                          {
+                              owner: context.repo.owner,
+                              repo: context.repo.repo,
+                              pull_number: context.issue.number,
+                              per_page: 100
+                          }
+                      );
 
                       const domainFiles = files.filter(
                           (file) =>