Add hash check for dynamic modules cache

[neo]

What does this PR do?

This is to replicate what transformers already has: https://github.com/huggingface/transformers/blob/357f414cae88d5f592105bd97ec4a24ef7735f9f/src/transformers/dynamic_module_utils.py#L296-L310
from: huggingface/transformers#33162

It would not only offer a small optimization, but also, more importantly, ensure "is equality" between back-to-back calls of this from the exact same module by preventing reloading the same file.

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