Exported array destructuring variable declaration with omitted expressions exports anonymous symbol

Input:
```ts
export const [x, , y] = [1, 2, 3];
```

Current Result:
```lua
local ____exports = {}
____exports.x, ____exports.____, ____exports.y = 1, 2, 3
return ____exports
```

Expected Result:
```lua
local ____exports = {}
____exports.x, ____, ____exports.y = 1, 2, 3
return ____exports
```