message center: handler no need to return error since it's only context cancel

[3AceShowHand]

What problem does this PR solve?

Issue Number: close #2911

What is changed and how it works?

The returned error must be nil or context.cancel, and the context is passed from the server, so can be removed.

• Refactored Message Handlers: The signature of MessageHandler functions across the codebase has been updated to no longer return an error, simplifying their implementation.
• Simplified Error Handling: Explicit error returns, particularly for context.Canceled, have been removed from message handler implementations, indicating that such conditions are now handled internally or are not propagated as errors.
• Standardized Function Naming: Message receiving functions have been consistently renamed from recvMessages or handleMessage to recvMessage (or recvRedoMessage for specific cases) for improved clarity and consistency.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`

[ti-chi-bot]

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[gemini-code-assist]

Summary of Changes

Hello @3AceShowHand, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the message handling mechanism within the system by modifying the MessageHandler interface to be void-returning. This change simplifies the logic within various message processing functions by eliminating the need to explicitly return errors, particularly when a context cancellation occurs. The handlers now focus solely on processing messages, with any necessary error handling or context-aware termination managed implicitly or at a higher level, leading to cleaner and more focused code.

Highlights

• Refactored Message Handlers: The signature of MessageHandler functions across the codebase has been updated to no longer return an error, simplifying their implementation.
• Simplified Error Handling: Explicit error returns, particularly for context.Canceled, have been removed from message handler implementations, indicating that such conditions are now handled internally or are not propagated as errors.
• Standardized Function Naming: Message receiving functions have been consistently renamed from recvMessages or handleMessage to recvMessage (or recvRedoMessage for specific cases) for improved clarity and consistency.

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[gemini-code-assist]

Code Review

This pull request simplifies the message handling logic by removing the error return from MessageHandler. This is a good refactoring as the only returned error was for context cancellation, which is already handled. The changes are applied consistently across the codebase, and the renaming of various handler functions improves clarity and consistency. I have one suggestion to improve code consistency.

[ti-chi-bot]

@3AceShowHand: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-check	770d70b	link	true	/test pull-check
pull-build	770d70b	link	true	/test pull-build

Full PR test history. Your PR dashboard.

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