Use DisplayInfo rotation instead of Display#getRotation in BookStyleClosedStatePredicate

Display#getRotation could be stale as it depends on the context
resources/configuration which could be deferred.
onDisplayChanged callback only notifies about updates
in DisplayInfo, so it doesn't notify about the configuration
change update, so BookStyleClosedStatePredicate could end up
with a stale rotation value.

This change updates querying of the rotation to DisplayInfo's
rotation field instead.

Test: manual rotate => check logs, try to enter wedge mode
Test: atest BookStyleDeviceStatePolicyTest
Bug: 326802066
Change-Id: I89514a383f5627e92b83dca110d9f850a0bb8397
(cherry picked from commit ee512f06)