Failing test - heavy.lua

## Issue

Failing `heavy.lua` test.

When compiled with YK, this test runs for multiple hours and consumes 42GB of memory.
Further profiling is needed to understand what's happening there.

## Steps to reproduce

```shell
$ src/lua heavy.lua
```

## Versions:

YKLua - `main/a03ed08b34ae5cc5a6238f27bb09c47d133a9da8`
YK - ` master/a690e6eaf7253a4fa9c04bb54406c07b7efc0085`