Allow same commission in the change commission

[shuse2]

Description

In the changeCommission command execution, lastCommission increased height should be increased when value are the same as in below

if trsParams.newCommission >= oldCommission:
        b = block including trs
        validatorStore(senderAddress).lastCommissionIncreaseHeight = b.header.height

Acceptance Criteria

• It should test the case where trsParams.newCommission == oldCommission:

Additional Information

Related LIP