Review Mozilla 1972089: [toolbar redesign] Update lock icon

🔍 Bugzilla Audit

Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1972089

Commit: 3ed7b4e8

Toolbar icon refactor.

We might need to update our onion icons.

Edited Aug 05, 2025 by Pier Angelo Vendrame

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