[test] Failing test for using hooks from React namespace

Forget assumes hooks are imported and used directly without the React namespace 
and generates incorrect code when if there's a namespace.

compiler/forget/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/_bug.hooks-with-React-namespace.expect.md

@@ -0,0 +1,30 @@
+
+## Input
+
+```javascript
+function Foo() {
+  const [x, setX] = React.useState(1);
+  return x;
+}
+
+```
+
+## Code
+
+```javascript
+import { unstable_useMemoCache as useMemoCache } from "react";
+function Foo() {
+  const $ = useMemoCache(1);
+  let t0;
+  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
+    t0 = React.useState(1);
+    $[0] = t0;
+  } else {
+    t0 = $[0];
+  }
+  const [x] = t0;
+  return x;
+}
+
+```
+      

compiler/forget/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/_bug.hooks-with-React-namespace.js

@@ -0,0 +1,4 @@
+function Foo() {
+  const [x, setX] = React.useState(1);
+  return x;
+}