Fixed autofill multi-sessions workflow so it only merge sessions flagged with FLAG_DELAY_SAVE.

Also improved some log statements by adding the session id.

Test: atest MultiScreenDifferentActivitiesTest
Test: atest CtsAutoFillServiceTestCases # sanity check

Bug: 113281366

Change-Id: Ifc3b4c6cda076bd3e5c6c32ff8312ff40f56d955
3 files changed