[llvm-objdump][macho] Fix relative method list dumping for little endian hosts (#85778)

`macho-relative-method-lists.test` is failing on little endian
platforms, when matching 'name'.

```
CHK32-NEXT: name 0x144 (0x{{[0-9a-f]*}}) instance_method_00

next:10'0             X error: no match found
          18:  name 0x144 (0x7ac)      
```
This seems like the obvious fix.

Co-authored-by: Alex B <alexborcan@meta.com>