[test] Add test for capturing a renamed ref

The ref isn't renamed inside the lambda, needs to be fixed.

compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-function-renamed-ref.expect.md

@@ -0,0 +1,50 @@
+
+## Input
+
+```javascript
+function component(a, b) {
+  let z = { a };
+  {
+    let z = { b };
+    (function () {
+      mutate(z);
+    })();
+  }
+  return z;
+}
+
+```
+
+## Code
+
+```javascript
+function component(a, b) {
+  const $ = React.unstable_useMemoCache(4);
+  const c_0 = $[0] !== a;
+  let t0;
+  if (c_0) {
+    t0 = { a };
+    $[0] = a;
+    $[1] = t0;
+  } else {
+    t0 = $[1];
+  }
+  const z = t0;
+  const c_2 = $[2] !== b;
+  let t1;
+  if (c_2) {
+    t1 = { b };
+    $[2] = b;
+    $[3] = t1;
+  } else {
+    t1 = $[3];
+  }
+  const z_0 = t1;
+  (function () {
+    mutate(z);
+  })();
+  return z;
+}
+
+```
+      

compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-function-renamed-ref.js

@@ -0,0 +1,10 @@
+function component(a, b) {
+  let z = { a };
+  {
+    let z = { b };
+    (function () {
+      mutate(z);
+    })();
+  }
+  return z;
+}