Fix oatdump .data.bimg.rel.ro for intrinsics.

The Integer.valueOf() intrinsic is using entries that
point to the boot image live objects array data rather
than a start of an Object. So, we need to check for
such entries before we look at the type of the Object.

Test: Additional test in oatdump_app_test
Test: m test-art-host-gtest
Bug: 71526895
Change-Id: I49ab3b416aa2b4912b9fd2043805e900ad76f0f2