fix(drive,drive-abci): retire SHIELDED_MOST_RECENT_ANCHOR_KEY; derive most-recent from [8] and never empty it#3605

QuantumExplorer merged 1 commit intov3.1-devdashpay/platform:v3.1-devfrom

platform-wallet/shielded-prune-keep-recentdashpay/platform:platform-wallet/shielded-prune-keep-recentCopy head branch name to clipboard