Bug 1512343 [wpt PR 14382] - Update wpt metadata, a=testonly

wpt-pr: 14382
wpt-type: metadata

testing/web-platform/meta/beacon/idlharness.any.js.ini

@@ -0,0 +1,12 @@
+[idlharness.any.html]
+  [Navigator interface: operation sendBacon(USVString, BodyInit)]
+    expected: FAIL
+
+  [Navigator interface: navigator must inherit property "sendBacon(USVString, BodyInit)" with the proper type]
+    expected: FAIL
+
+  [Navigator interface: calling sendBacon(USVString, BodyInit) on navigator with too few arguments must throw TypeError]
+    expected: FAIL
+
+
+[idlharness.any.worker.html]