[SB Refactor] Migrate mobile's `state.visible` to the new pipeline.

StatusBarMobileView uses `MobileIconState.visible` to determine its
visibility status. Following all the inputs to `visible`, then
`visible = hasMobileData && !airplaneMode && !forceHiddenByTuning`. This
CL implements that boolean logic.

Bug: 238425913
Fixes: 267786582
Test: manual: turn on airplane mode and verify mobile triangle is hidden
every where. Turn off airplane mode and verify triangle re-appears.
Test: `adb shell pm enable com.android.systemui/.tuner.TunerActivity`
then Settings > System > System UI Tuner > Status bar > Toggle the
mobile
on/off and see the mobile icon toggle as well
Test: atest MobileIconViewModelTest

Change-Id: I5986ba477ba5172480ab4a5f7b9900259a8466ea