[Dual Shade] Quick settings UI fixes:

1) Show the regular status bar, without a large clock (expanded header).
2) Do not constrain the QS shade height.
3) Do not draw an addition outline around the brightness slider.
4) Scroll the brightness slider together with the tiles grid.
5) Fix some paddings.

Fix: 384903506
Test: Manually tested by opening the quick settings shade on a folded
and unfolded device.
Flag: com.android.systemui.dual_shade

Change-Id: I34475cab386d88f43ef6e8b4316b216c1a26ca99