Show a consent dialog for Private Space calls before redirecting to the main user

This will work with the CALL intent filter set to SKIP_CURRENT_PROFILE
in DefaultCrossProfileIntentFiltersUtils.

Bug: 328741033
Test: atest CallIntentProcessorTest
Test: Manual - CUJs tested here: http://shortn/_tFFvBdR5MW

Flag: android.multiuser.enable_private_space_intent_redirection
MUST_SLEEP for tests

Change-Id: Ie9552333b5d4ea0d13923eff70c501622c6d12de