Use operator set or notSet in rollup_join

**Describe the bug**
Can't use the `set` or `notSet` operator in `rollup_join`.

**To Reproduce**
Steps to reproduce the behaviour:

Create two cubes, A and B. Both belong to different data sources. Cube B has the joins as it is a base cube. Define `rollup_join` in it. In the query, add a filter with any dimension that is `set` or `notSet`,

You'll get an error:
`To join across data sources, use rollupJoin with Cube Store. If rollupJoin is defined, this error indicates it doesn't match the query. Please use Rollup Designer to verify its definition. Found data sources: default, delivery
`

**Version:**
[e.g. 1.3.85]