fix: Use full hostname & unify pause logic

[smalluban]

Fixes #2168 and unifies pause behavior on subdomains if the top domain is paused.

• The tab stats setup should be done in onCommited instead of onBeforeNavigate to properly trigger setup after initial 30X redirects - the cnn.com or onet.pl sites are good examples - the onCommited is triggered once, but after redirects, with the final URL
• The removal of the www. subdomain was mainly caused by the above bug to avoid situations where not the latest (and correct) hostname was added to paused websites
• Instead of removing the www subdomain, we can only hide it in the panel header, as the browsers hide it in the URL address bar
• The DNR allow rule for exmaple.com works also for abc.exmaple.com - because of that this PR also unifies the behavior of the isPaused() function and isTrusted() for exceptions in Firefox - for the consistent logic through all the platforms. Unification helps with no-stress migration from the current production logic - if a user added onet.pl, it will work with unified logic as well, as the www.onet.pl contains the onet.pl (for isPaused and exceptions).

[github-actions]

Builds for commit 4479fd7:

• ghostery-chromium-10.4.19-4479fd7
• ghostery-firefox-10.4.19-4479fd7