max_worker evaluate option not passed anywhere?

[stdweird]

Describe the bug
the max_worker option is not passed anywhere when runing evaluate in sync mode (the default). the asyncio pool is way too large by default

Ragas version: latest
Python version: 3.11

Code to Reproduce

Error trace

Expected behavior
we can control the number of workers during sync evaluate

Additional context

[stdweird]

will be fixed by #643, i had a monkey patch with that is based on similar approach

# monkeypatch concurrency into executor with a semaphore
from ragas.executor import Executor
import asyncio
import typing
def new_wrap_callable_with_index(self, callable: typing.Callable, counter):
    if not hasattr(self, 'sema'):
        self.sema = asyncio.Semaphore(1)

    async def wrapped_callable_async(*args, **kwargs):
        async with self.sema:
            return counter, await callable(*args, **kwargs)

    return wrapped_callable_async
Executor.wrap_callable_with_index = new_wrap_callable_with_index
# end monkeypatch