refactor: convert ControlMessageType to enum

[ngmr]

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[ngmr]

#build
#spawn.fullfat.buckets=com.ibm.ws.messaging.open_31_fat,com.ibm.ws.messaging.open_clientcontainer_fat,com.ibm.ws.messaging.open_comms_fat,com.ibm.ws.messaging.open_fat,com.ibm.ws.messaging.open_jms20AutoCloseable_fat,com.ibm.ws.messaging.open_jms20context_fat,com.ibm.ws.messaging.open_jms20contextSecurity2_fat,com.ibm.ws.messaging.open_jms20contextSecurity_fat,com.ibm.ws.messaging.open_jms20deliverydelay_fat,com.ibm.ws.messaging.open_jms20_fat,com.ibm.ws.messaging.open_jms20security_fat,com.ibm.ws.microprofile.reactive.messaging_fat,io.openliberty.microprofile.reactive.messaging.internal_fat

[contbld]

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[contbld]

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[contbld]

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