starknet_patricia_storage: non mut get in storage trait

[nimrod-starkware]

Note

Medium Risk
Trait signature change touches all storage backends and wrappers, so breakage risk is mostly around compilation/behavioral assumptions (e.g., caching or interior mutability) rather than data correctness.

Overview
Updates the Storage trait so read operations (get/mget) take &self instead of &mut self, making reads callable from shared references and better aligned with concurrent access patterns.

Propagates the new signature across all storage implementations and wrappers (Aerospike, RocksDB, MDBX, MapStorage, CachedStorage, short-key wrappers, and NullStorage), and adjusts call sites/tests/benchmark interference code to stop requiring mutable clones solely for reads.

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[reviewable-StarkWare]

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[nimrod-starkware]

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This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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• starknet_patricia_storage: non mut get in storage trait #12123 : 2 dependent PRs (#12165 , #12252 ) 👈 (View in Graphite)
• starknet_patricia_storage: dont cache reads in cached storage #12251
• starknet_patricia_storage: atomic counters for read stats #12122
• main-v0.14.2

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