has_client: Add upper tester for the PTS

With this patch, if cache is off, we read all presets to satisfy PTS.

Bug: 238171211
Test: manualy with PTS
Test: atest BluetoothInstrumentationTests
Tag: #feature
Merged-In: I641e9933d0a967c4949ff3374e8f43d119fe3b92
Change-Id: I641e9933d0a967c4949ff3374e8f43d119fe3b92
(cherry picked from commit 1e07461b)