Reapply "Fix perf regression VisualStabilityCoordinator"

This reverts commit e639f542.

Previously revering CL[1] to fix CL[2] made
simpleSmartReplyWithLifetimeExtension_matchesScreenshot as presubmit
because the CL[1] breaks the notification post by visibility statbility
coordiator received mLockscreenInGoneTransition during unlocking to
pending the notification pipeline but never reset it.

The issue only reproducible when Scene container & keyguard WM refactor
flags (flexi) enabled, and the root cause is in SceneContainerStartable
didn't invoke statusBarKeyguardViewManager.hide() ->
setKeyguardFadingAway(true) when the keyguard transiting
to gone in the first place, caused hide() end up being consumed after
the keyguard visiblity changed & makes setKeyguardFadingAway(true)
invoked after keyguard unlocked without reset it.

Moving forward, for flexi will no longer rely on KeyguardStateController callback, as a result, we use SceneContainer#isEnabled as a check to use KeyguardStateController legacy callback for non-flexi to fix this perf regression as a short-term and keep monitoring keyguard gone trancition by alwaysCollectFlow for flexi enabled (and file b/381779933 for tracking potential perf regression for flexi)

With that, we can safely repplay the previous reverts CL back.

[1]: I14eadece21d48442581d75a7edbb2b383832003d
[2]: I71bb0969113dd12ec5ea0f04c79e016b672795bd

Flag: com.android.systemui.check_lockscreen_gone_transition
Bug: 375302455
Bug: 373203637
Bug: 373169481
Test: atest SystemUIMicrobenchmark
Test: atest VisualStabilityCoordinatorTest
Test: atest NotificationRemoteInput
      (with enabling Scene container & keyguard WM refactor flags)
Change-Id: Ibbcf21845cb0a87e91117cecc25bc87fa785607c