[Improvement][Master] Unify PriorityDelayQueue with AbstractDelayEventBus

[ruanwenjun]

Search before asking

• I had searched in the issues and found no similar feature requirement.

Description

The main logic are same at DelayEntry and AbstractDelayEvent.

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[ruanwenjun]

@reele

[github-actions]

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