Need to disallow activeset fetching via hs/1 (hash) protocol

[ivan4th]

Description

Given that almost all the users have upgraded to the version that supports a separate protocol (as/1) for active sets, we can disallow activeset fetching using hs/1 (normal hash protocol) to avoid possible overload scenarios, in which activeset requests are subject to normal hash blob pacers.

Steps to reproduce

Request activesets using hs/1 protocol

Actual Behavior

Requests succeed, subject to hs/1 pacer setting

Expected Behavior

Activesets not allowed to be fetched via hs/1, only via as/1