Frameworks: Annotate trivial @GuardedBy in services/core

Add @GuardedBy for simple functions that require locks and have a name in
one of the frameworks naming styles for locks ("^.*(Locked|LPw|LPr|L[a-zA-Z]|UL|AL|NL)$").

Derived by errorprone.

Bug: 73000847
Test: m
Change-Id: Ic48bbb2f95c686fb44b6e3169c67fa52d6df80b4