Add fuzzy metadata to backdrop-filter-animated.html (#55184)

Author: nt1m

css/css-view-transitions/backdrop-filter-animated.html

@@ -5,6 +5,7 @@
 <link rel="author" href="mailto:[email protected]">
 <link rel="match" href="backdrop-filter-animated-ref.html">
 <script src="/common/reftest-wait.js"></script>
+<meta name="fuzzy" content="maxDifference=0-10;totalPixels=0-100">
 <style>
 .box {
   background: green;