[BUG] Refactor memberlist reconciliation in MemberlistManager

[Ishiihara]

Description of changes

Summarize the changes made by this PR.

• Improvements & Bug fixes
  • This PR fixes the issue that the memberlist manager is not propagating the memberlist to downstream. The issue is that the Get function for the worker queue is blocking when the queue is empty. The end result is that if the number of events is not cumulated to the batch size, the memberlist may block waiting and not propagate the memberlist with timeout.
• New functionality
  • ...

Test plan

How are these changes tested?

• Tests pass locally with pytest for python, yarn test for js, cargo test for rust

Documentation Changes

Are all docstrings for user-facing APIs updated if required? Do we need to make documentation changes in the docs repository?

[Ishiihara]

• [BUG] Refactor memberlist reconciliation in MemberlistManager #2071 👈
• main

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[github-actions]

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[github-actions]

Reviewer Checklist

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Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)