Data is incorrectly recorded in the map

• OS: Linux
• OS Version: Arch Linux
• Architecture: amd64

-> % tarantool -v
Tarantool 2.11.0-0-g247a9a418
Target: Linux-x86_64-RelWithDebInfo
Build options: cmake . -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_BACKTRACE=TRUE
Compiler: GNU-13.1.1
C_FLAGS:-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection -g -ffile-prefix-map=/build/tarantool/src=/usr/src/debug/tarantool -flto=auto -fexceptions -funwind-tables -fasynchronous-unwind-tables -fno-common -fopenmp -msse2 -Wformat -Wformat-security -Werror=format-security -fstack-protector-strong -fPIC -fmacro-prefix-map=/build/tarantool/src/tarantool=. -std=c11 -Wall -Wextra -Wno-gnu-alignof-expression -fno-gnu89-inline -Wno-cast-function-type
CXX_FLAGS:-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -g -ffile-prefix-map=/build/tarantool/src=/usr/src/debug/tarantool -flto=auto -fexceptions -funwind-tables -fasynchronous-unwind-tables -fno-common -fopenmp -msse2 -Wformat -Wformat-security -Werror=format-security -fstack-protector-strong -fPIC -fmacro-prefix-map=/build/tarantool/src/tarantool=. -std=c++11 -Wall -Wextra -Wno-invalid-offsetof -Wno-gnu-alignof-expression -Wno-cast-function-type

Steps to reproduce

local uuid = require('uuid')

box.cfg({})

local format = {
  {
    name = 'id',
    type = 'uuid'
  },
  {
    name = 'entity',
    type = 'map'
  },
}

local space = box.schema.create_space('fooBar', {
  format = format,
  if_not_exists = true
})

space:create_index('id', {
  parts = { 'id', },
  unique = true,
  if_not_exists = true
})

local id = uuid()
local query = [[
INSERT INTO "fooBar" VALUES (CAST(']]..id:str()..[[' AS UUID),
{
  'new_fields': {
    'subscription': {
      'users':false,
      'all':true
    },

    'first_name': 'Vladimir Mayakovsky'
  },

  'old_fields': {
    'subscription':{
      'all':false
    },
    'first_name': 'Eugene Onegin'
  }
})]]

local res = box.execute(query)

-- Успешно записалось
if res and res.row_count == 1 then
  --
  local data = box.space.fooBar:get({id})

  print(data[2].new_fields.first_name) -- nil
  print(data[2].old_fields.first_name) -- nil

  for k, v in pairs(data[2].new_fields) do
    print(k, v)
  end
end

Actual behavior
first_name was supposed to be recorded.

Expected behavior

print(data[2].new_fields.first_name) -- 'Vladimir Mayakovsky'
print(data[2].old_fields.first_name) -- 'Eugene Onegin'

Start with the Lua reproduction using box.execute and the box.space.fooBar:get({id}) lookup, focusing on how the map value is stored and returned. Confirm the result against the expected new_fields.first_name and old_fields.first_name values, then add or run a regression test covering this INSERT path.