feat: reuse paging-derived accounts to avoid redundant device I/O at unlock

[gantunesr]

Summary of the changes:

• New private #pagingCache: Map<string, { hdPath, address, publicKey, chainCode? }> keyed by derivation path.
• #getAccountsBIP44 now calls bridge.getPublicKey directly instead of this.unlock(path), so it can capture the full payload and stash { hdPath, address, publicKey: payload.publicKey, chainCode: payload.chainCode } into the cache. Error handling and the hdk update are preserved.
• addAccounts checks #pagingCache.get(path) first; on a hit it reuses cached.address and skips unlock(path) → bridge.getPublicKey. On a miss it falls back to await this.unlock(path). Note: The non-Ledger Live branch is unchanged.
• Cache is invalidated on forgetDevice, setHdPath (when the path actually changes), destroy, and defensively at the start of addAccounts when the device is disconnected (!this.isConnected()).
• New public invalidatePagingCache() method for external disconnect handlers, backed by private #invalidatePagingCache().

Examples

N/A

[gantunesr]

@metamaskbot publish-preview

[github-actions]

Preview builds have been published. See these instructions (from the core monorepo) for more information about preview builds.

Expand for full list of packages and versions.

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  "@metamask-previews/eth-hd-keyring": "15.0.0-963e020",
  "@metamask-previews/eth-ledger-bridge-keyring": "13.0.1-963e020",
  "@metamask-previews/eth-money-keyring": "4.0.0-963e020",
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  "@metamask-previews/keyring-snap-sdk": "10.0.0-963e020",
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