revert auth test changes

Author: harshitha-cstk

packages/contentstack-auth/test/unit/auth-handler.test.ts

@@ -32,9 +32,7 @@ describe('Auth Handler', function () {
               return Promise.reject(new Error('Invalid 2FA code'));
             }
           } else {
-            const error: any = new Error('2FA required');
-            error.errorCode = 294;
-            return Promise.reject(error);
+            return Promise.resolve({ error_code: 294 });
           }
         }
         return Promise.resolve({ user });
@@ -117,23 +115,13 @@ describe('Auth Handler', function () {
     it('Login with 2FA enabled invalid otp, failed to login', async function () {
       this.timeout(10000);
       TFAEnabled = true;
-      askOTPStub.restore();
-      askOTPStub = sinon.stub(interactive, 'askOTP').callsFake(function () {
-        return Promise.resolve(InvalidTFATestToken);
-      });
+      let result;
       try {
-        await authHandler.login(credentials.email, credentials.password);
-        expect.fail('Should have thrown an error');
+        result = await authHandler.login(credentials.email, credentials.password);
       } catch (error) {
-        expect(error).to.be.instanceOf(Error);
-        expect((error as Error).message).to.include('Invalid 2FA code');
-      } finally {
-        TFAEnabled = false;
-        askOTPStub.restore();
-        askOTPStub = sinon.stub(interactive, 'askOTP').callsFake(function () {
-          return Promise.resolve(TFATestToken);
-        });
+        result = error;
       }
+      TFAEnabled = false;
     });
 
     it('Login with 2FA enabled with sms channel, should be logged in successfully', async function () {