Auto merge of #23805 - georgeroman:initial_actions_support_in_webdriver, r=jdm

Initial Actions support in WebDriver

<!-- Please describe your changes on the following line: -->

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors

<!-- Either: -->
- [X] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/23805)
<!-- Reviewable:end -->

tests/wpt/metadata/webdriver/tests/perform_actions/none.py.ini

@@ -1,2 +1,4 @@
 [none.py]
-  disabled: Unimplemented WebDriver command
+  [test_no_browsing_context]
+    expected: ERROR
+

tests/wpt/metadata/webdriver/tests/perform_actions/validity.py.ini

@@ -1,2 +0,0 @@
-[validity.py]
-  disabled: Unimplemented WebDriver command