SIMD-0290: Relax block constraint requiring valid fee-payer

Not active on mainnet-beta; not active on testnet; not active on devnet.

Introduced in anza-xyz/agave PR #13556.

Feature id FEEXbxUuKobtrt1qNK5pjtzbPQhsppBTrNNG74xu4mai.

Related

• SIMD-0290

Vortex

• Consensus leaderboard
• Fees leaderboard
• Validators
• Stake pools
• Decentralization
• Client versions
• Cluster status
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