warp timestamp again, adjust bounding to 25% fast 80% slow #15204

Active on mainnet-beta (epoch 154); not planned for testnet; not planned for devnet.

Introduced in solana-labs/solana PR #15204.

Feature id GvDsGDkH5gyzwpDhxNixx8vtx1kwYHH13RiNAPw27zXb.

Vortex

• Consensus leaderboard
• Fees leaderboard
• Validators
• Stake pools
• Decentralization
• Client versions
• Cluster status
• Governance
• Feature gates
• SIMDs
• Activity
• API and AI usage