Add mandatory `rule_name` attribute to jvm_maven_import_external.
Add mandatory `rule_name` attribute to jvm_maven_import_external.

The `rule_name` attribute was added to facilitate sharing the underlying jvm_import_external with aar_import_external and aar_maven_import_external macros, which use aar_import. jvm_maven_import_external is for importing JARs with java_import.

Related, as users are starting to adopt it: https://github.com/bazelbuild/bazel/issues/5452

RELNOTES: None
PiperOrigin-RevId: 214920320

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