Bug 1436436 [wpt PR 9409]- Update wpt metadata, a=testonly

wpt-pr: 9409
wpt-type: metadata

testing/web-platform/meta/html/editing/editing-0/contenteditable/contentEditable-slotted-inherit.html.ini

@@ -0,0 +1,7 @@
+[contentEditable-slotted-inherit.html]
+  [Slotted child of contenteditable host should be editable - slot direct child of shadow root]
+    expected: FAIL
+
+  [Slotted child of contenteditable host should be editable - slot wrapped in shadow tree ancestor]
+    expected: FAIL
+