Fix TorDomainIsolator initialization on Android

In TBA 13.0aX and 13.0.X (until 13.0.2) the domain isolator is not being initialized incorrectly.

It seems the TorStartupService isn't being loaded (even though I'm quite sure it looks like exactly the one we had in Torbutton).

I don't know if it's due to the XPCOM changes that happened between 102 and 115, or if it's just because of the various refactors.

Since we don't have a circuit display, the only way to notice this is going to different sites that show the IP address, and notice that they have the same one, but we'd expect them to be isolated. Some Tor-friendly ones are:

• https://check.torproject.org/
• https://www.wtfismyip.com/
• https://myip.wtf/ (same as the previous one, but different FP domain for TBB 😄)
• https://mullvad.net/en/check

When we finally start working on tests we should also have a test that checks circuit FPI.