Add disable_mmap to option to Pipeline

[DN6]

What does this PR do?

Addressed some of the issues brought up in #12599. Using mmaped safetensors on networked volumes can lead to very slow load/device transfer times. More context: huggingface/safetensors#562 (comment)

We have the disable_mmap option for single file and models to skip using safetensors default mmaped loading, but didn't add it to from_pretrained in pipelines.

Fixes # (issue)

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