Nonce fix progress

[aeyakovenko]

Problem

General issue to keep everyone on the same page for nonce fix progress

Proposed Solution

Audits

• separates durable nonce and blockhash domains #25744
• permanently disables durable nonces with chain blockhash domain #25788
• adds system instruction to upgrade legacy nonce versions #25789
• Reject durable nonce transactions not signed by authority #25831
• Reject durable nonce txs that don't use an advanceable nonce #25832

Rollout

• testnet activation
• testnet old nonce updated
• devnet activation
• devnet old nonce updates
• mainnet-beta activation
• main net-beat old nonce updated

tag @behzadnouri @jackcmay @jstarry @ryoqun @sakridge @t-nelson

[jstarry]

This is already captured in this issue: #25787