AudioService: initialize spatial audio state on first device connection

Add missing initialization of spatial audio state in device inventory
according to defaults in spatializer helper when a device is connected
for the first time.

Bug: 328936846
Bug: 326367563
Bug: 331734025
Test: repro steps in bugs

Change-Id: I1d7c0651c67925eb5027a5d17f006211b92a349c
(cherry picked from commit b259aa89)