test: don't use TS_REUSE_ALLOCATOR on Darwin systems

For some reason, the linker seems to behave a bit differently with `-exported_symbols_list` on macOS vs other operating systems, so we'll disable this for now

cli/loader/src/lib.rs

@@ -602,6 +602,7 @@ impl Loader {
 
         // Always use the same allocator in the CLI as any scanner, useful for debugging and
         // tracking memory leaks in tests.
+        #[cfg(not(any(target_os = "macos", target_os = "ios")))]
         command.arg("-DTS_REUSE_ALLOCATOR");
 
         let output = command.output().with_context(|| {