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

Change-Id: I74503df6e98a113a86a938150d69399c9eead306