fix: revert to 404 error code on bns name errors (#1440)

src/api/routes/bns/names.ts

@@ -161,7 +161,7 @@ export function createBnsNamesRouter(db: PgStore, chainId: ChainID): express.Rou
           if (error instanceof NameRedirectError) {
             res.redirect(error.message);
           } else {
-            res.status(400).json(error);
+            res.status(404).json(error);
           }
         });
     })

src/tests-bns/api.ts

@@ -737,7 +737,7 @@ describe('BNS API tests', () => {
 
   test('Failure: name info', async () => {
     const query1 = await supertest(api.server).get(`/v1/names/testname`);
-    expect(query1.status).toBe(400);
+    expect(query1.status).toBe(404);
   });
 
   test('Success: fetching name info', async () => {

src/tests-bns/bns-integration-tests.ts

@@ -436,7 +436,7 @@ describe('BNS integration tests', () => {
     expect(query4.status).toBe(200);
 
     const query5 = await supertest(api.server).get(`/v1/names/excluded.${name}.${namespace}`);
-    expect(query5.status).toBe(400);
+    expect(query5.status).toBe(404);
     expect(query5.type).toBe('application/json');
 
     // testing nameupdate 3