[ExecuTorch][Weight Sharing][XNNPACK] load named data map data for xnnpack (#9294)

This PR was created by the merge bot to help merge the original PR into
the main branch.
ghstack PR number: https://github.com/pytorch/executorch/pull/9152 by
@mcr229
^ Please use this as the source of truth for the PR details, comments,
and reviews
ghstack PR base:
https://github.com/pytorch/executorch/tree/gh/mcr229/8/base
ghstack PR head:
https://github.com/pytorch/executorch/tree/gh/mcr229/8/head
Merge bot PR base:
https://github.com/pytorch/executorch/tree/gh/mcr229/7/orig
Merge bot PR head:
https://github.com/pytorch/executorch/tree/gh/mcr229/8/orig
@diff-train-skip-merge

---------

Co-authored-by: Max Ren <maxren@meta.com>