Fix unresponsive web clicks

[Andresshamis]

What changed

• Stop the hidden auto-hide sidebar hit-test blocker from intercepting web content clicks.
• Clear the blocker frame when its exclusion region is removed.
• Add regression coverage for hidden and cleared blockers.
• Split the default WebKit content-blocker alternation into supported individual rules.

Why

The sidebar blocker retained its old frame after becoming hidden and continued swallowing clicks in that region. WebKit remained responsive, so scrolling still worked while links and buttons appeared stuck.

Impact

Links and controls remain clickable after the auto-hide sidebar disappears, and the default content-blocker list now compiles successfully.

Validation

• Full Swift test suite: 340 tests passed.
• Live before/after reproduction confirmed the formerly blocked YouTube link navigates correctly.
• Rebuilt, signed, and launched the app successfully.
• git diff --check passed.