Rename invokeaction->command, invoketarget->commandfor
This also drops the "auto" value, and updates all tests to accommodate
these changes, as well as adding more tests for extra robustness.
This is the result of a discussion around renaming the attribute which starts around whatwg/html#9625 (comment) and concludes in whatwg/html#9625 (comment).
Bug: 349994204
Change-Id: Ic4a5572506e855036c8c1f75aa0de894de026948
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5666705
Reviewed-by: Joey Arhar jarhar@chromium.org
Commit-Queue: Keith Cirkel chromium@keithcirkel.co.uk
Cr-Commit-Position: refs/heads/main@{#1325205}