Add withReshuffle(boolean) option to FileIO.matchAll()

[s3847243]

What

This PR adds a new method withReshuffle(boolean) to FileIO.matchAll() to allow disabling the automatic reshuffling step (Reshuffle.viaRandomKey()).

Why

Currently, FileIO.matchAll() always applies a Reshuffle step. While this improves performance for wildcard patterns that expand into many files, it is not ideal when processing a large static list of file paths (e.g., 1M+). In such cases, reshuffling can block downstream fusion and autoscaling.

This feature allows advanced users to opt out of reshuffling to improve performance and fusion behavior.

How

• Added a getReshuffle() property to the MatchAll AutoValue class, defaulting to true.
• Updated the expand() method to conditionally apply the reshuffle based on the property.
• Added withReshuffle(boolean) for API access.
• Updated FileIOTest to verify the reshuffle toggle behavior.

Fixes

Fixes: #33330

---

• This addresses an open issue (fixes #33330)
• Tested and verified the updated behavior
• I will update CHANGES.md upon approval if necessary

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