Simplify default trace tag set for user builds

This change updates the default tag set for user builds to be {userdebug
tags minus user-unavailable tags} instead of {specific tag set for user
builds}. This is intended to simplify the upcoming changes for preset
trace configs, so that each preset doesn't require two versions.

Test: Check that the default tags for user and userdebug builds is
      correct.
Bug: 306420759
Change-Id: I858a81a51da63db51b9c9c566e4af352a0d27497
1 file changed