AAudio: Use Device Frames Per Burst with Endpoint

Currently, some calculations use the app frames per burst even though
these values are used with the audio endpoint. With sample rate
conversion, these are not the same. Thus, there will be extra glitches.

This CL fixes this by using the device frames per burst when
communicating with the audio endpoint.

Bug: 399952341
Test: atest AAudioTests
Flag: EXEMPT bugfix
Change-Id: Ie97d0bc1cdeb9011c5db64b682a903507f0db535