Mark fast/dom/cssTarget-crash.html as timing out

The current TestExpectations for this test seem too widely scoped - this
test is either timing out or passing.

Bug: 1105957
Change-Id: I34733445a33907d185da03155aa83b31e6070261
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300772Reviewed-by: Yu Han <yuzhehan@chromium.org>
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#788833}

third_party/blink/web_tests/TestExpectations

@@ -6859,7 +6859,7 @@ crbug.com/1104186 [ Win ] fast/forms/color-scheme/suggestion-picker/time-suggest
 # Sheriff 2020-07-13
 
 crbug.com/1104910 [ Mac ] external/wpt/webaudio/the-audio-api/the-oscillatornode-interface/osc-basic-waveform.html [ Pass Failure ]
-crbug.com/1104910 fast/dom/cssTarget-crash.html [ Pass Timeout Failure ]
+crbug.com/1105957 fast/dom/cssTarget-crash.html [ Pass Timeout ]
 crbug.com/1104910 fast/peerconnection/RTCPeerConnection-reload-interesting-usage.html [ Pass Failure ]
 crbug.com/1104910 [ Win ] virtual/cache-storage-eager-reading/external/wpt/service-workers/service-worker/registration-updateviacache.https.html [ Pass Failure ]
 crbug.com/1104910 [ Mac10.15 ] editing/selection/selection-background.html [ Pass Failure ]