[MacPorts] #42114: maven-devel: fix select, livecheck and remove conflict with maven3

[MacPorts]

#42114: maven-devel: fix select, livecheck and remove conflict with maven3
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 Reporter:  robsonpeixoto@…  |      Owner:  macports-tickets@…
     Type:  enhancement      |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:
 Keywords:  haspatch         |       Port:  maven-devel
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Ticket URL: <https://trac.macports.org/ticket/42114>
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