chore: Sync upstream Firefox to version 147.0, p=#11822

* chore: Sync upstream to `Firefox 147.0`

* chore: Continued migration, b=no-bug, c=tests

* chore: Finish migration without testing, b=no-bug, c=scripts, tabs, media, common, split-view

* feat: Finish migration, b=no-bug, c=common, compact-mode, split-view, workspaces

* feat: Finish basic migration, b=no-bug, c=kbs, common, folders

* feat: Update surfer, b=no-bug, c=scripts

src/widget/cocoa/VibrancyManager-mm.patch

@@ -35,7 +35,7 @@ index b4c14233c64dd3515518d3167f8ee2877fe41a93..2b91fa3044794765b8e15c6b66b348de
      case VibrancyType::Titlebar:
        return NSVisualEffectMaterialTitlebar;
    }
-@@ -78,6 +95,7 @@ static NSVisualEffectBlendingMode VisualEffectBlendingModeForVibrancyType(
+@@ -78,6 +95,7 @@ - (NSView*)hitTest:(NSPoint)aPoint {
  
  - (void)prefChanged {
    self.blendingMode = VisualEffectBlendingModeForVibrancyType(mType);