associatedStreet relation does not mean its members shouldn't be disconnected

[stragu]

URL

https://www.openstreetmap.org/way/887735280

How to reproduce the issue?

1. Select way 887735280 and its node joining it to Gladstone rd (way 991574385)
2. Right-click the node to see that it is not possible to disconnect it "because it connects members of a relation"

This kind of relation is not related to routable networks or a specific order of members, and therefore iD should let contributors disconnect features that are members of the same relation.

(As to the reason I am editing this: I surveyed the area and the two roads do not connect anymore and now have a physical barrier between them).

Screenshot(s) or anything else?

No response

Which iD Editor versions do you see the issue on?

Released version at openstreetmap.org/edit

Which browsers are you seeing this problem on?

Firefox

[1ec5]

Fixed in
c854564 for #8804.