perf(l1): cache account_codes blobs

[MegaRedHand]

Motivation

Moving to BlobDB improved performance, but we suspect this also disabled caching for values.

Description

This PR configures an explicit blob cache of 128MB.

Flamegraph before:

Flamegraph after:

Notice TableCache::Get in the far left getting bigger than before. We also get a lot less decompression.

[github-actions]

Lines of code report

Total lines added: 2
Total lines removed: 0
Total lines changed: 2

Detailed view

+-------------------------------------------+-------+------+
| File                                      | Lines | Diff |
+-------------------------------------------+-------+------+
| ethrex/crates/storage/store_db/rocksdb.rs | 1654  | +2   |
+-------------------------------------------+-------+------+

[Copilot]

Pull Request Overview

This PR adds explicit blob cache configuration to improve performance for the account_codes column family in RocksDB. Moving to BlobDB previously disabled implicit caching, so this change configures a 128MB LRU cache specifically for blob data.

• Configures explicit 128MB LRU cache for blob files in the account_codes column family
• Addresses performance regression from BlobDB migration by re-enabling caching

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[github-actions]

Benchmark Block Execution Results Comparison Against Main

Command	Mean [s]	Min [s]	Max [s]	Relative
base	59.486 ± 0.189	59.296	59.968	1.00
head	59.676 ± 0.200	59.384	59.965	1.00 ± 0.00

[jrchatruc]

Closed in favor of #5307