Get `displayInfo.rotation` instead of `context.display.rotation`

`context.display.rotation` may not update immediately when display
rotation onChanged() callback, we should rely on displayInfo.rotation
instead.

Reference : BiometricDisplayListener#didRotationChange()

bug: 284098873
Test: manual go to SFPS enroll page, rotate device and check indicator
Change-Id: Ifc636e41305db04b29aa89810e7075bb7edce704