Auto merge of #23745 - georgeroman:implement_get_element_property_wd_command, r=jdm

Implement GetElementProperty wd command

<!-- 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/23745)
<!-- Reviewable:end -->

tests/wpt/metadata/webdriver/tests/element_send_keys/interactability.py.ini

@@ -8,24 +8,15 @@
   [test_visibility_hidden]
     expected: FAIL
 
-  [test_transparent_element]
-    expected: FAIL
-
   [test_iframe_is_interactable]
     expected: FAIL
 
   [test_readonly_element]
     expected: FAIL
 
-  [test_obscured_element]
-    expected: FAIL
-
   [test_document_element_is_interactable]
     expected: FAIL
 
-  [test_body_is_interactable]
-    expected: FAIL
-
   [test_hidden]
     expected: FAIL
 

tests/wpt/metadata/webdriver/tests/get_element_property/get.py.ini

@@ -1,2 +1,31 @@
 [get.py]
-  disabled: Unimplemented WebDriver command
+  [test_primitives[js_primitive3-py_primitive3\]]
+    expected: FAIL
+
+  [test_idl_attribute]
+    expected: FAIL
+
+  [test_element_not_found]
+    expected: FAIL
+
+  [test_primitives_set_by_execute_script[42-42\]]
+    expected: FAIL
+
+  [test_primitives[js_primitive2-py_primitive2\]]
+    expected: FAIL
+
+  [test_primitives_set_by_execute_script[js_primitive2-py_primitive2\]]
+    expected: FAIL
+
+  [test_mutated_element]
+    expected: FAIL
+
+  [test_no_browsing_context]
+    expected: ERROR
+
+  [test_primitives_set_by_execute_script[js_primitive3-py_primitive3\]]
+    expected: FAIL
+
+  [test_primitives_set_by_execute_script["foobar"-foobar\]]
+    expected: FAIL
+

tests/wpt/metadata/webdriver/tests/refresh/refresh.py.ini

@@ -2,15 +2,9 @@
   [test_history_pushstate]
     expected: FAIL
 
-  [test_basic]
-    expected: FAIL
-
   [test_refresh_switches_to_parent_browsing_context]
     expected: FAIL
 
   [test_no_browsing_context]
     expected: ERROR
 
-  [test_dismissed_beforeunload]
-    expected: FAIL
-