Fix useGetManyAggregate merge queries with different meta

[djhi]

Problem

When using <ReferenceArrayInput> with different queryOptions.meta, the useGetManyAggregate hook should not merge the calls.

Solution

Group calls by resource and meta.

How To Test

Unit tests

Additional Checks

• The PR targets master for a bugfix or a documentation fix, or next for a feature
• The PR includes unit tests (if not possible, describe why)
• The documentation is up to date

Also, please make sure to read the contributing guidelines.