Fix caching of long press and multi press timeout

ViewConfiguration used to cache values for long press and multi
press timeouts by fetching values from settings within the constructor.
As a result, when the user changes the long press value from Settings,
the changes don't reflect in the already opened apps. This change fixes
this by avoid caching as a member and fetching the settings value on
demand.

Test: atest ViewConfigurationTest
Fixes: 422182063
Flag: android.companion.virtualdevice.flags.viewconfiguration_apis
Change-Id: I2038e8b539af1ef2021f2753a58487150ee8403f