Surround ComposeView with FrameLayout for ignoring touches

This allows to ignore touches that are in the clipped area of QS. This
is the same treatment done in QSContainerImpl.

Test: manual, expand QS from anywhere in the shade
Bug: 353254353
Flag: com.android.systemui.qs_ui_refactor_compose_fragment

Change-Id: Ia1cc5678ea215adc6720f475e74dea3dae7a5785