Bug 1990747 [wpt PR 55056] - Add two more "nested" interest invoker test cases, and fix corner case, a=testonly

Automatic update from web-platform-tests
Add two more "nested" interest invoker test cases, and fix corner case

This adds a few more test cases for nested interest invokers,
including one with double-nested invokers, and another with circular
dependencies. The CL also fixes these new cases, by doing a
more complete search for upstream invokers, through both DOM parents
and SourceInterestInvoker() upstream invokers.

Bug: 326681249
Change-Id: I594448de6e9f90d8b4f95d4aea6aaeb27a4ee972
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6970966
Reviewed-by: Joey Arhar <jarharchromium.org>
Commit-Queue: Mason Freed <masonfchromium.org>
Cr-Commit-Position: refs/heads/main{#1520370}

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wpt-commits: 6919824ac54da7d65d8ef4dc3725ab35c2caabb6
wpt-pr: 55056

UltraBlame original commit: 2d693eeade9b9cff82c292eae40c85f14b3ff9c3

Author: marco-c