Testnet regenesis

[omegablitz]

No description provided.

[omegablitz]

To merge after category-labs/monad#1983

[Copilot]

Pull request overview

This PR implements a testnet regenesis by resetting configuration values and removing versioned block reward logic. The changes simplify the staking reward system and reset activation thresholds to their initial states.

Key Changes:

• Removed dual block reward version system in favor of single version
• Reset testnet epoch and round activation values to genesis state
• Updated monad-execution submodule reference

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
monad-cxx/monad-execution	Updated submodule commit reference for execution layer changes
monad-chain-config/src/staking_config.rs	Removed block_reward_v_two field and simplified reward logic to single version
monad-chain-config/src/lib.rs	Reset testnet activation rounds and timestamps to genesis values (Round::MIN and 0)

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