test: allow empty recipient code in state tests

[ZR74]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains CI/CD configuration changes
• Contains documentation changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

6. Release note

None

[Copilot]

Pull request overview

This PR modifies the EVM state test infrastructure to properly handle transactions to accounts with empty or non-existent code, which is valid behavior in Ethereum. Additionally, it adds comprehensive validation for EIP-1559 and EIP-4844 transaction constraints.

Changes:

• Refined bytecode validation to only reject invalid null pointer cases while allowing empty bytecode
• Added comprehensive EIP-1559/4844 transaction constraint validation including fee checks, blob transaction validation, and sender balance verification
• Removed overly restrictive validation that prevented testing transactions to accounts without code

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/tests/evm_test_host.hpp	Updated bytecode validation to allow empty bytecode (nullptr with size 0) and only reject invalid cases (nullptr with non-zero size)
src/tests/evm_state_tests.cpp	Added intx include, implemented EIP-1559/4844 transaction validation, removed restrictive checks for missing target accounts, and updated bytecode assignment to handle accounts without code

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