Update src/pages/api/lms/submissions/index.ts

Co-authored-by: Copilot <[email protected]>

Author: jeromehardaway

src/pages/api/lms/submissions/index.ts

@@ -111,10 +111,10 @@ export default requireAuth(async (req: AuthenticatedRequest, res: NextApiRespons
           id: existingSubmission.id,
         },
         data: {
-          githubUrl: githubUrl || existingSubmission.githubUrl,
-          liveUrl: liveUrl || existingSubmission.liveUrl,
-          notes: notes || existingSubmission.notes,
-          files: files || existingSubmission.files,
+          githubUrl: githubUrl ?? existingSubmission.githubUrl,
+          liveUrl: liveUrl ?? existingSubmission.liveUrl,
+          notes: notes ?? existingSubmission.notes,
+          files: files ?? existingSubmission.files,
           status: 'SUBMITTED',
           submittedAt: new Date(),
         },