[BUG] Explicit maven group setting for pluginZip broke

[prudhvigodithi]

Describe the bug
Coming from #4733 (comment), with PR #4733 merge, the pluginZip functionality to choose the groupID org.opensearch.plugin broke.

1. The default groupID is not getting applied as org.opensearch.plugin.
2. If we add specifically the group = org.opensearch.plugin not only the zips but the jars are also being pushed to org.opensearch.plugin

To Reproduce

1. /build.sh manifests/2.4.0/opensearch-2.4.0.yml --component OpenSearch
2. /build.sh manifests/2.4.0/opensearch-2.4.0.yml --component job-scheduler

Expected behavior
When added group org.opensearch.plugin to pluginZip the other publications should not use this and vice versa.
The zips should be part of org.opensearch.plugin and jars should be part of org.opensearch group.

Additional context
Add any other context about the problem here.

[reta]

Ok, together with @prudhvigodithi we figured out, there is confusion regarding group and groupId settings, the pluginZip must set groupId (not group), otherwise it affects project's wide setting and overrides all publications