Fix false-positive snapshot mismatch

Same reason why jest can fail with "could not find all inline snapshots".
Since we don't need "done()" on async tests we can safely remove it.

Author: eps1lon

packages/react-devtools-shared/src/__tests__/dehydratedValueSerializer.js

@@ -9,11 +9,20 @@
 
 // test() is part of Jest's serializer API
 export function test(maybeDehydratedValue) {
+  if (
+    maybeDehydratedValue === null ||
+    typeof maybeDehydratedValue !== 'object'
+  ) {
+    return false;
+  }
+
+  const hasOwnProperty = Object.prototype.hasOwnProperty.bind(
+    maybeDehydratedValue,
+  );
+
   const {meta} = require('react-devtools-shared/src/hydration');
   return (
-    maybeDehydratedValue !== null &&
-    typeof maybeDehydratedValue === 'object' &&
-    maybeDehydratedValue.hasOwnProperty(meta.inspectable) &&
+    hasOwnProperty(meta.inspectable) &&
     maybeDehydratedValue[meta.inspected] !== true
   );
 }