tt connect console ignores syntax errors

[locker]

Bug description

In contrast to the built-in Tarantool console module, tt connect console doesn't raise any error if the input string contains syntax errors. Instead it returns null.

Version

Tarantool CLI version 2.6.0, linux/amd64. commit: 96db068 (v2.6.0-10-g96db0688623b)

Steps to reproduce

1. Create a test instance.

   tt init
   tt create single_instance --name test
   tt start

2. Connect to the console.

   tt connect test:instance001

3. Type an invalid Lua string.

   hello)
   

Actual behavior

test:instance001> hello)
---
- null
...

Expected behavior

test:instance001> hello)
---
- error: '[string "hello)"]:1: ''='' expected near '')'''
...