[Flexiglass] make NSSL expanded in the QS

Make the NSSL.expandFraction 1.0, when we are in the QuickSettings scene,
to match the legacy behaviour. NSSL wants to draw HUNs in the QS, and
reads this flag state to do so.

Bug: 339181697
Test: atest NotificationStackAppearanceIntegrationTest
Flag: com.android.systemui.scene_container
Change-Id: Ia0d637eaf492b7f3a922c513cda1fc139f73a24d
2 files changed