Remove diagnostic warning if `force_version` is set

[fzakaria]

Our developers get concerned when they see messages like:

Please remove duplicate artifacts from the artifact list so you do not get unexpected artifact versions

This message can be present even though we use set_version such as in

use_repo(maven, "maven", "rules_proto_grpc_java_maven")
maven.artifact(
    name = "rules_proto_grpc_java_maven",
    artifact = "protobuf-java",
    force_version = True,
    group = "com.google.protobuf",
    version = "3.25.5",
)
maven.artifact(
    name = "rules_proto_grpc_java_maven",
    artifact = "protobuf-java-util",
    force_version = True,
    group = "com.google.protobuf",
    version = "3.25.5",
)

I think a good improvement to the UX would be to not display this message if there are duplicate versions only if only one of them has force_version set.