Use KeepAliveIsolateSOCKSAuth to drop custom Tor patch
We (and TBB) have been applying a custom patch to Tor for a while due to https://trac.torproject.org/projects/tor/ticket/15482. Tor 0.2.7.3-rc brings a new option (0.2.7.3-rc) that’s meant to allow us to drop that patch.
Feature Branch: feature/10194-tor-0.2.7
Parent Task: #10194 (closed)