Migrate WebHID MojoJS based tests to internal folder

This CL migrate WebHID MojsJS based tests and resource to internal
folder temporary. We will move it back once WebHID Testing specification
for test-only interface is defined.

Bug: 324264462
Change-Id: I350704c624ab3a7e8610840a93aad58027d613d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5277558
Reviewed-by: Alvin Ji <alvinji@chromium.org>
Commit-Queue: Alvin Ji <alvinji@chromium.org>
Reviewed-by: Matt Reynolds <mattreynolds@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1260105}