Bug 1633426 [wpt PR 23266] - Update wpt metadata, a=testonly

wpt-pr: 23266 wpt-type: metadata
2020-04-27 22:07:17 +00:00 · 2020-04-27 22:07:17 +00:00 · 78e41a7fca
--- a/testing/web-platform/meta/pointerevents/mouse-pointer-boundary-events-for-shadowdom.html.ini
+++ b/testing/web-platform/meta/pointerevents/mouse-pointer-boundary-events-for-shadowdom.html.ini
@ -0,0 +1,2 @@
+[mouse-pointer-boundary-events-for-shadowdom.html]
+  expected: ERROR