[Enhancement] Replace channel.attr().set() and channel.attr().get() with RemotingHelper.getAttributeValue() and RemotingHelper.setPropertyToAttr()

[qianye1001]

Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

Replace channel.attr().set() and channel.attr().get() with RemotingHelper.getAttributeValue() and RemotingHelper.setPropertyToAttr()

Motivation

both used in project may cause some confusion

Describe the Solution You'd Like

Replace channel.attr().set() and channel.attr().get() with RemotingHelper.getAttributeValue() and RemotingHelper.setPropertyToAttr()

Describe Alternatives You've Considered

null

Additional Context

No response