Bug 1853015: Simplify intermittent-failure annotation for WPT content-visibility-086.html. (no review)

The autogenerated annotation from the wptsync process was too finely tuned; it
had some strong expected-fail annotations for certain platforms/configs, which
don't match reality (we're seeing it intermittently pass on those
platforms/configs).

The test seems to be intermittent on most (or maybe all) platforms/configs, so
let's just make the annotation reflect that.

Differential Revision: https://phabricator.services.mozilla.com/D188343

testing/web-platform/meta/css/css-contain/content-visibility/content-visibility-086.html.ini

@@ -1,12 +1,3 @@
 [content-visibility-086.html]
   [Content Visibility: innerText]
-    expected:
-      if (os == "linux") and not swgl and not fission and not debug and not asan: FAIL
-      if (os == "win") and not swgl and debug and (processor == "x86_64"): FAIL
-      if (os == "linux") and not swgl and fission and debug: FAIL
-      if (os == "linux") and swgl and fission: [PASS, FAIL]
-      if (os == "linux") and swgl and not fission: FAIL
-      if (os == "win") and swgl: [PASS, FAIL]
-      if (os == "android") and not debug: [PASS, FAIL]
-      if os == "mac": FAIL
-      [FAIL, PASS]
+    expected: [FAIL, PASS]