TEST ONLY, please ignore this cherrypick (https://b.corp.google.com/issues/244482743#comment3).

GitWatcher: ignore
------------------------------

Revert "Prevent exfiltration of system files via avatar picker."

This reverts commit 1325574d.

Reason for revert: regression if multiple crop system crop handlers are present

Test: atest AvatarPhotoControllerTest
Change-Id: I4dac3ac8d27d2b6d664614dcfa9488d2dad7ee7d
(cherry picked from commit f18aa11d)
Merged-In: I4dac3ac8d27d2b6d664614dcfa9488d2dad7ee7d
(cherry picked from commit a957714aab2e19b8a8a17c894ac23633c23d19cc)
Merged-In: I4dac3ac8d27d2b6d664614dcfa9488d2dad7ee7d