Added changes for logging curated photos time

This CL aims at adding changes for logging curated photos fetching and
rendering time. It also adds a new action that will help to distinguish
whether it was a user photo or a default photo.

Bug: 410816249
Flag: com.android.systemui.shared.new_customization_picker_ui
Test: Tested by building and installing picker, checking if logs are
printed or not

Change-Id: Id1b972bfa0fbd7ab13450f12f7bf2d3862b697f2