broadcaster: Use specified presentation delay

Recommended by BAP 1.0, presentation delay is 40 ms for both: Low
Latency, High Reliability mode.

Tag: #Bug
Flag: EXEMPT lea broadcast only change feature disabled by system prop
Test: atest bluetooth_test_broadcaster
Bug: 315239407
Change-Id: I7a76105632dd0282326f9dd6deafaa1d853cb06f