[Felt privacy-Unified panel] - Enhanced Tracking Protection toggle spills out of it's designated area in split-view

:page_facing_up: Description

Steps to reproduce:

1. Fresh install FF and open it in split-view.
2. Access a website. Tap on the lock icon to open the panel.
3. Observe the toggle.

Actual results

Enhanced Tracking Protection toggle spills out of its designated area in split-view.

Expected results

The toggle should not spill out of its designated area.

Device & build information

• Device: iPad mini 5 (16.7.2)
• Build version: v9000 (55393)

:information_source: Reference Person

@FilippoZazzeroni

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┆Issue is synchronized with this Jira Bug