Use uid to query list of implicitly queryable packages

Use sdk sandbox uid to query the list of implicitly queryable packages
instead of app id since that is what the list uses to keep track. Also
update corresponding method parameters to reflect that it takes in uid
instead of app id.

Bug: 246984568
Test: atest GtsSdkSandboxInprocessMultiUserTests
Change-Id: Ia4bd89537ac72caf52a6808d5aacb81adcf6146b