Remove swipe-up to bouncer from hub

When on hub, swipe-up gesture will not open bouncer and instead
exit hub and go to lockscreen.

Bug: 407611478
Test: swipe up on hub and verify going to lockscreen
Flag: com.android.systemui.glanceable_hub_v2
Change-Id: I954e9745da13c3ecb2175e87007947d6862d9d18