Protect all of ART's region space from the start.

We used to only protect memory regions upon clearing them (meaning
they had been allocated before). This change protects all
regions (which are all initially unused) from the start.

Test: art/test.py
Bug: 74064045
Change-Id: I30e6b151063164783f20fecbfa9aa50a8a50327a
2 files changed