starknet_committer: add utility that returns sorted leaf indices

[ArielElp]

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[ArielElp]

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• apollo_committer: add new request handler #14003
• starknet_committer: delete patricia paths on reverts #14002
• starknet_committer: underlying logic of the new read witnesses and commit endpoint #14001
• starknet_committer: extract metadata construction to a function #14000
• starknet_committer: extract commit plan to commit_or_load #13999
• starknet_committer: read and write patricia paths to index db #13998
• starknet_committer: db keys for proofs and accessed keys digest #13997
• apollo_committer_types: add patricia proofs request and response types #13996
• starknet_committer: add patricia paths forest reader/writer traits #13995
• starknet_committer: define StarknetForestProofs serde #13994
• starknet_committer: compute and store accessed keys digest #13993
• starknet_committer: add utility that returns sorted leaf indices #13992 👈 (View in Graphite)
• starknet_committer: abstract fetch_all_patricia_paths #13991
• starknet_patricia_storage: two layer storage #13990
• starknet_committer: move fetch_patricia_paths tests #13960
• starknet_committer: fetch patricia paths tests #13959
• starknet_committer: support both layouts in fetch_patricia_paths #13958
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[reviewable-StarkWare]

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[cursor]

PR Summary

Low Risk
Low risk refactor that centralizes leaf-index construction/sorting for Patricia witness collection; main risk is subtle ordering/lifetime mistakes affecting which trie paths are fetched.

Overview
Adds LeavesRequest plus get_leaf_indices()/LeavesRequest::get_sorted() to build the class/contract/storage leaf-index buffers and return SortedLeafIndices views for Patricia witness collection.

Refactors fetch_previous_and_new_patricia_paths to reuse this utility for both previous and new root-hash traversals, and re-exports SortedLeafIndices from tree.rs (with minor import cleanup).

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