Disable horizontal swipe outside of the grid container

On glanceable hub, disable horizontal swipe gesture above and
below the grid container, so swiping in those areas will not
accidentally close hub and go to lockscreen.

Fixes: 419568044
Test: manually verify horizontal swipe outside of grid container disabled
Flag: com.android.systemui.glanceable_hub_v2
Change-Id: I2fcdf019b1b2647e318d404d68882ba9b4e3f9bd