[Sheriff] Disable failing inspector-protocol blink test

Bug: 1236466
Change-Id: If6ae2f8456e2a1ed191ee6c19e776dffe2f0a41c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3070523
Reviewed-by: Alexander Hendrich <hendrich@chromium.org>
Commit-Queue: Jit Yao Yap <jityao@google.com>
Owners-Override: Jit Yao Yap <jityao@google.com>
Cr-Commit-Position: refs/heads/master@{#908419}
NOKEYCHECK=True
GitOrigin-RevId: fa8c58dab0836527bac9f86869b02bd77c9647c3

blink/web_tests/TestExpectations

@@ -7233,3 +7233,6 @@ crbug.com/1234619 external/wpt/screen-capture/permissions-policy-video.https.sub
 # Sheriff 2021-08-02
 crbug.com/1235685 [ Mac10.14 ] virtual/scroll-unification/plugins/focus-change-4-change-focus-and-blur.html [ Failure Pass ]
 crbug.com/1215390 [ Linux ] external/wpt/pointerevents/pointerevent_pointerId_scope.html [ Failure Pass ]
+
+# Sheriff 2021-08-04
+crbug.com/1236466 inspector-protocol/runtime/runtime-execution-contexts-events.js [ Failure Pass Crash ]