[Enhancement] Extract validate and build message property methods out of sendMessageActivity into a common util class

[Allenhuangrui]

Before Creating the Enhancement Request

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

Summary

Extract validate and build message property methods out of sendMessageActivity into a common util class so that it can be used by other modules.

Motivation

Extract validate and build message property methods out of sendMessageActivity into a common util class so that it can be used by other modules.

Describe the Solution You'd Like

Change method signatures from protected to public static and extract them into a common util class so that it can be used by other modules.

Describe Alternatives You've Considered

No alternative.

Additional Context

No response