Only retrieve license terms if there is at least one license linked to agreement

Overview:
A GET to `/licenses/custprops` is triggered on viewing an agreement even if that agreement is not linked to a license.

Steps to Reproduce:

1. Create an agreement with minimal data, no license
2. Open browser dev console
3. View agreement

Expected Results:
Not GET to license/custprops endpoint

Actual Results:
A GET is made to license/custprops endpoint

Additional Information:
Relevant code https://github.com/folio-org/ui-agreements/blob/dfd5ec38111746047f058dafaf0aa4e084f6009b/src/components/views/Agreement/Agreement.js#L72

Ethan comment on slack: "we need to add some queryParams to only fire that when we have >1 licence linked"