Fix oatdump_app_test for address sanitizer.

Pass -Xmx64M to dex2oat to reduce the memory allocation as
the test was failing to allocate the default 512MiB heap
area for certain address sanitation configs.

Test: SANITIZE_HOST=address ASAN_OPTIONS=detect_leaks=0 \
      ART_HEAP_POISONING=true ART_USE_READ_BARRIER=false \
      m test-art-host-gtest-oatdump_app_test
Bug: 74378710

(cherry picked from commit 0530bccd)

Change-Id: I93ad00b0980d251165af3d67de98fe866712f0ae