Avoid going through the {WasmDebugInfo}, which existed for debugging in
the interpreter in production. Instead, tests now instantiate the
interpreter directly.

This will unblock the removal of the whole {WasmDebugInfo}, and finally
moving the interpreter to the test directory.

R=ahaas@chromium.org

Bug: v8:10389
Change-Id: I8ae76a1d5bff716c129781b11a15369a80b13603
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2235543Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68258}