Use Read/WriteLittleEndianValue call to make sure
we deal with wasm values in the correct endian order
on big endian machine.

Change-Id: I7ede8226319ecfd0605cefa1823e5bbaeb0ebb6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2752879
Commit-Queue: Junliang Yan <junyan@redhat.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73368}