Only call jit_load after the zygote fork

Otherwise we always get that enable_debug_features is false since
that flag passed as a compiler option post zygote fork.

No significant change to libart-compiler PSS on calculator.

Bug: 27810774

(cherry picked from commit b10cef442594dd0d6c5f1a5784643931a25cc431)

Change-Id: Ie50668ba05ad07a5cf046497959f6d27e09f8fe2
3 files changed