ART: Add ClassLoader.getResourceAsStream cutout

Add support for getResourceAsStream to unstarted runtime.

Allows to compile-time initialize:
* android.icu.impl.ICUConfig

Allows to revert other resource loading hacks.

Do not intercept Class.getResourceAsStream directly. There is
name-mangling involved, leave that on the Java side.

Bug: 27265238
Change-Id: I8c408aa633086f4a1aa14bb1b404607b2498fe97