[DO NOT MERGE] Disallow clicks on privacy chip before provisioned

While the device is provisioning, do not allow clicks on the privacy
chip.

Test: atest HeaderPrivacyIconsControllerTest
Bug: 253043058
Change-Id: I9c8f642976f3332f4d5c9db89a4917dae501f251
(cherry picked from commit d5038c72)
Merged-In: I9c8f642976f3332f4d5c9db89a4917dae501f251