Implement expansion to QS in keyguard

When in keyguard, swiping from the top directly expands QS instead of
expanding QQS. Wire up the corresponding signals to achieve this (as is
done in QSImpl).

Test: manual
Test: atest QSFragmentComposeViewModelForceQSTest
Fixes: 370046812
Flag: com.android.systemui.qs_ui_refactor_compose_fragment
Change-Id: Icd71bcf3fd6bad1b786bf13e99b7814073a8f1c3