Preemptively disable unified trust panel by default so we are tracking for next ESR

🔍 Bugzilla Audit

Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1947483

Description

I think this is new UI for enhanced tracking protection on android, which I believe we disable. We should make sure this hasn't exposed any new UI we don't want.

Note: there's also a chance this new UI is also used for other features that we do want to expose, like the site connection security.

Edited Apr 23, 2025 by henry

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