engine: only fix queries with user entered strings
engine: only fix queries with user entered strings

If we are just requesting a bunch of tags for example, there's no
need to call into the fix route.
[endlessm/eos-sdk#3571]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib