SIMD-0317: Enforce the Merkle proof size of a fixed 32:32 FEC set
Not active on mainnet-beta; #3 in testnet's activation queue; not active on devnet.
Minimum versions: Agave v4.4.0-beta.0, Firedancer v26.10.0.
Introduced in anza-xyz/agave PR #15170.
Feature id turbzzBJLGMJJikLvgCCJu9e1hTmfxwarrbLndYAsK5.