Replace locking JNI array methods

GetPrimitiveArrayCritical takes a global lock within the runtime to
avoid a copy. This restricts what type of calls can be made in the
critical section.

Since we utilize array read methods primarily for extremely small
sized arrays (usually one element), the copy is cheap.

Test: Compiles
Bug: 231038541
Change-Id: I5bc53d8ca46677fefb3b52b0cd54d90776edcf83