[security] SubscriptionGroup is exposed to unprivileged callers

SubscriptionInfo.mGroupUUID is not cleared in
conditionallyRemoveIdentifiers if the caller only has READ_PHONE_STATE
(based on a check to checkReadPhoneState) and not READ_DEVICE_IDENTIFIERS.
Bug: 181053462
Test: atest SubscriptionManagerTest

Change-Id: I68d1edb4e7cc2ad6696363ea1dacb09e839a651e
Merged-In: I68d1edb4e7cc2ad6696363ea1dacb09e839a651e
(cherry picked from commit f93d57ebb057af5bdb493dfe34519bf97869b023)
1 file changed