recovers merkle shreds from erasure codes (backport #27136)

[mergify]

This is an automatic backport of pull request #27136 done by Mergify.
Cherry-pick of c0b6335 has failed:

On branch mergify/bp/v1.11/pr-27136
Your branch is up to date with 'origin/v1.11'.

You are currently cherry-picking commit c0b63351a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   Cargo.lock
	modified:   ledger/src/blockstore.rs
	modified:   ledger/src/shred.rs
	modified:   ledger/src/shred/merkle.rs
	modified:   ledger/src/shredder.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   ledger/Cargo.toml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[solana-grimes]

😱 New commits were pushed while the automerge label was present.