Expanded part is missing from the search result in v1 API

[Pooya-Oladazimi]

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Describe the bug In ols3 search result, there was a field called "expanded" that holds the info regarding the "also in" for each search result. Example in ols3: https://service.tib.eu/ts4tib/api/search?q=data&start=0&groupField=iri&rows=10

This is missing from the ols4 v1: https://www.ebi.ac.uk/ols4/api/search?q=data&start=0&groupField=iri&rows=10

To Reproduce call the search endpoint

https://www.ebi.ac.uk/ols4/api/search?q=data&start=0&groupField=iri&rows=10

Expected behavior v1 in ols4 should be backward compatible with ols3

Screenshots ols3:

ols4 v1