IBX-9121: Removed limitations for IsUserEnabled criterion. (#2546)

* Elasticsearch limitation removed

* Solr limitation removed

Author: julitafalcondusza

docs/search/criteria_reference/isuserenabled_criterion.md

@@ -8,10 +8,6 @@ searches for User accounts that are enabled or disabled.
 - (optional) `value` - bool representing whether to search for enabled (default `true`)
 or disabled User accounts
 
-## Limitations
-
-The `IsUserEnabled` Criterion is not available in Solr or Elastic search engines.
-
 ## Example
 
 ### PHP