SIMD-0444: Relax program data account check in migration

SIMD-0444 (Relax program data account check in migration) is a Core Standard Solana Improvement Document by febo (Anza); proposal status Activated.

Active on mainnet-beta since epoch 956; active on testnet since epoch 928; active on devnet since epoch 1043.

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• Feature gate: SIMD-0444: Relax program data account check in migration

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