Do not build com_android_internal_util_ArrayUtils for host

The native implementation in com_android_internal_util_ArrayUtils is not
used on host builds, and it is only compatible with linux builds.

Flag: NONE host-only change
Bug: 382649667
Test: build libandroid_runtime on host
Change-Id: I2f648175081de01ac5924e5fbc23128169ec67c1