Create the PendingIntent for UserHandle.CURRENT

This fixes use of the autofill SaveUi for secondary users. Without this
change, when running under a secondary user, the PendingIntent is always
sent to U0.

Bug: 159618798
Bug: 155102708
Test: lunch hawk-userdebug && m
run cts --skip-device-info -s emulator-5554 -m CtsAutoFillServiceTestCases -t android.autofillservice.cts.SimpleSaveActivityTest#testTapUrlSpanOnSuccinctDescription_thenTapBack

Change-Id: Ie6deaaaf47a11ae841c183003471d051df2beb90