[Dual Shade] Disable nested drags in all overlay shades.

Fix: 391146814
Test: Manually by scrolling the shade fully, and ensuring it doesn't
 expand/collapse the shade unintentionally.
Test: Unit tests still pass.
Flag: com.android.systemui.scene_container
Change-Id: Idd8285a30a41a667103e07f9c88909e62414c498