Disable one flaky test

Flaky endorser has detected image-lcp-before-detection.tentative.html
is flaky on Chrome. Skip this test on chrome_wpt_tests for now.

Bug: 1508175
Change-Id: I8cea04dab987316bb34c551476c148fb99da069e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5085709
Commit-Queue: Weizhong Xia <weizhong@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Weizhong Xia <weizhong@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1233107}

third_party/blink/web_tests/NeverFixTests

@@ -2112,6 +2112,9 @@ crbug.com/1499775 [ Chrome ] wpt_internal/webmidi/loopback-receive.https.html [
 crbug.com/1499775 [ Chrome ] wpt_internal/webmidi/loopback-with-timestamp.https.html [ Skip ]
 crbug.com/1499775 [ Chrome ] wpt_internal/webmidi/requestmidiaccess-upgrade.https.html [ Skip ]
 
+# Skip one flaky test
+crbug.com/1508175 [ Chrome ] external/wpt/soft-navigation-heuristics/image-lcp-before-detection.tentative.html [ Skip ]
+
 # WebNN GPU backend is supported on Win11 by default.
 crbug.com/1500120 [ Win10.20h2 ] virtual/webnn-service-enabled/external/wpt/webnn/gpu/* [ Skip ]