refactor and fix some codes

[simonjiao]

Pull request type

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• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
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Issue Number: N/A

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Pull Request Overview

This PR performs a refactoring to remove legacy genesis handling and reorganize the module structure. The changes eliminate outdated legacy genesis code and relocate certain VM components.

• Remove legacy genesis handling and associated conversion functions
• Update transaction handling in block views to process both VM1 and VM2 transactions
• Move mvhashmap and parallel-executor modules from vm/ to commons/ directory

Reviewed Changes

Copilot reviewed 5 out of 22 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
rpc/api/src/types.rs	Update block view to handle both transactions and transactions2 fields
genesis/src/main.rs	Remove legacy parameter from genesis save operation
genesis/src/lib.rs	Remove legacy genesis struct and all legacy-related code
chain/tests/test_block_chain.rs	Change vector to array for block_ids
Cargo.toml	Move mvhashmap and parallel-executor paths from vm/ to commons/

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