Only trim applications UidStates in AppOpsService#trimUidStatesLocked

Fixes removal of UidStates for 2 cases:
1) Sandbox UidStates (created in createSandboxUidStateIfNotExistsForAppLocked)
2) Non-application uids from secondary users/profiles.

Bug: 335809734
Test: SdkSandboxMediaHostTest
Change-Id: Iaf8c87377d7727791f5c6b55e7d9aea47d471dcb