Switch from `cargo-machete` to `cargo-shear` (#62643)

This results in ~110 crates being removed, and some orphaned files also.

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Release Notes:

- N/A

Signed-off-by: Neel <neel@zed.dev>
282f47a544Neel committed on 8/20/2026, 10:08:48 AM· committed by GitHubparent4d1935b
64 files changedLine totals unavailable