fix(anvil): rewind Monad rollback profile - #16154
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Preserve rollback protocol state and serialize rewind transitions so direct and RPC callers observe a consistent chain. Stabilize endpoint identity tests for context-equivalent replacement endpoints.
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Fixes #16144.
This restores Monad's inferred execution profile when
anvil_rollbackoranvil_reorgremoves a transaction-hash replay block. The retained block now determines the hardfork/spec, fee and blob rules, and coherent next-block fee state, while explicit hardfork overrides remain fixed. Transaction-hash forks can also resolve their remote parent header as a rollback ancestor, and chain rewinds publish under the lifecycle write lock.This is stacked on #16151 so the fork endpoint identity remains immutable while the current fork hardfork follows the canonical head. It also scopes the new #16151 test guards so Clippy does not consider them live across reset awaits and pins the replacement-endpoint test's genesis timestamp so its fork-block hash is deterministic.