DO NOT MERGE Reflect the selection state that reflects the current task stack...

DO NOT MERGE Reflect the selection state that reflects the current task stack upon restarting the Navigation Bar.

Previously, while restarting the Navigation Bar, we omitted the step where we
apply the selection state that reflects the current task stack.

This omission caused CarFacetButtons to lose their selection state on
certain events, such as the day/night toggle.

Bug: 148211695
Test: Manual -- Verify that the selection state is preserved between
day/night toggle.
adb shell dumpsys activity service com.android.car/.CarService day-night-mode day
adb shell dumpsys activity service com.android.car/.CarService day-night-mode night

Change-Id: Ic07b8b66aa531436ce4f23d56bb3c11a79b7cb46