user assertion field incorrectly mapped.

[alexhuang091]

https://biocache-ws-test.ala.org.au/ws/occurrences/search?q=*&sort=first_loaded_date&dir=desc&pageSize=20&facets=basis_of_record&fq=id:95cb6dcc-abb3-4690-a8b5-209b600066a9

returns "hasUserAssertions": "50005", but it actually should be a bool value.

This is the data in solr:

"contentTypes":["point occurrence data",
"gbif import"],
"userAssertions":"50005",
"hasUserAssertions":true,
"userVerified":false,
"lastAssertionDate":"2021-11-08T21:51:34Z",
"assertionUserId":["56528"]}]

[adam-collins]

appears working