fix(046_05_01): a Subscription's q in a JSON body is not URL-encoded

The q member of a Subscription is a JSON string (TS 104-175 clause 5.2.6.5.2). Percent-encoding belongs to a q in a URL query string, not to one in a body.

name=="Eiffel%20Tower" in the Subscription asks for a name with a literal %20 in it, which the Building does not have, so no notification is sent. name=="Eiffel Tower" is what the TC means.

1 Test Case, one line in data/subscriptions/subscription-building-entities-active-watchedAttributes-query.jsonld (only 046_05 uses it). It fails on develop and passes with this MR.