src: remove usages of GetBackingStore in startup

This removes all usages of GetBackingStore in startup. See the linked
issue for an explanation.

Refs: #32226
Refs: #43921
PR-URL: #44078
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Feng Yu <F3n67u@outlook.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

src/node.cc

@@ -262,10 +262,10 @@ static void AtomicsWaitCallback(Isolate::AtomicsWaitEvent event,
 
   fprintf(stderr,
           "(node:%d) [Thread %" PRIu64 "] Atomics.wait(%p + %zx, %" PRId64
-              ", %.f) %s\n",
+          ", %.f) %s\n",
           static_cast<int>(uv_os_getpid()),
           env->thread_id(),
-          array_buffer->GetBackingStore()->Data(),
+          array_buffer->Data(),
           offset_in_bytes,
           value,
           timeout_in_ms,