[Bug] LMQ did not support scheduled message

[HScarb]

Before Creating the Bug Report

• I found a bug, not just asking a question, which should be created in GitHub Discussions.

• I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.

• I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.

Runtime platform environment

Windows10

RocketMQ version

branch: develop

JDK Version

OpenJDK 1.8

Describe the Bug

When sending a scheduled message to LMQ, it will be immediately dispatched to LMQ and will be dispatched again when the scheduled time is reached.

Steps to Reproduce

1. Start a consumer to consume a LMQ
2. Send a message with delay level or delay time
3. Wait and see the consumer consume the message

What Did You Expect to See?

The message will be consumed at the time I scheduled.

What Did You See Instead?

The message was consumed immediately, and will be consumed again at the time I scheduled.

Additional Context

The LMQ dispatch logic did not consider scheduled message.