Converting BFS to DFS for intent redirection

Based on the book-keeping required for BFS even when there are no cross
user available, to improve the performance converting this to DFS. Another optimisation is for lazy creation of book-keeping data structures for DFS.

Bug: 259125259
Test: atest CtsDomainVerificationDeviceMultiUserTestCases
Test: atest CtsAppCloningHostTest:com.android.cts.appcloning.IntentRedirectionTest
Test:
v2/android-crystalball-eng/health/microbench/instr_metric/package_manager
on forrest

Change-Id: I27e243f983ce587d4462cb89245685a14d5d5623