DIG-2086: specify fullSearch=true to enable full search

[daisieh]

To test: do a beacon search either through the GET or POST endpoints. If you specify fullSearch=true, you should see a beaconResultUrl in the result; if you don't, it shouldn't be there.

curl "http://candig.docker.internal:5080/genomics/beacon/v2/g_variants?assemblyId=hg38&geneId=TP53&fullSearch=true" \
     -H 'Authorization: Bearer <token>'  

or

curl -X "POST" "http://candig.docker.internal:5080/genomics/beacon/v2/g_variants" \
     -H 'Authorization: Bearer <token>' \
     -H 'Content-Type: application/json; charset=utf-8' \
     -d $'{
  "query": {
    "requestParameters": {
      "gene_id": "SLC2A5",
      "fullSearch": true
    }
  },
  "meta": {
    "apiVersion": "v2"
  }
}'