fix(evm): restore gas refund on JIT revert

[abmcar]

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 fixes gas refund handling during JIT execution errors and reverts by implementing a stack-based snapshot/restore mechanism for gas refunds.

Changes:

• Added GasRefundStack to track gas refund snapshots across call hierarchy
• Implemented automatic gas refund restoration in setExecutionError() for all error conditions except normal exits
• Added explicit gas refund restoration in revert/invalid/undefined instruction handlers
• Removed conditional checks for positive gas refund values when adding refunds from subcall results

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/runtime/evm_instance.h	Added GasRefundStack member and restoreGasRefundSnapshot() method to support gas refund snapshot/restore mechanism
src/runtime/evm_instance.cpp	Integrated gas refund stack management into pushMessage()/popMessage() for call hierarchy tracking, and added restoration logic in setExecutionError()
src/compiler/evm_frontend/evm_imported.cpp	Added explicit gas refund restoration in error handlers (invalid, undefined, revert) and removed conditional checks when adding gas refunds from subcall results

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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