[react-core] Clear more properties in detachFiber (facebook#16807)

Author: trueadm

packages/react-reconciler/src/ReactFiberCommitWork.js

@@ -858,6 +858,7 @@ function commitNestedUnmounts(
 }
 
 function detachFiber(current: Fiber) {
+  const alternate = current.alternate;
   // Cut off the return pointers to disconnect it from the tree. Ideally, we
   // should clear the child pointer of the parent alternate to let this
   // get GC:ed but we don't know which for sure which parent is the current
@@ -868,13 +869,14 @@ function detachFiber(current: Fiber) {
   current.memoizedState = null;
   current.updateQueue = null;
   current.dependencies = null;
-  const alternate = current.alternate;
+  current.sibling = null;
+  current.alternate = null;
+  current.firstEffect = null;
+  current.lastEffect = null;
+  current.pendingProps = null;
+  current.memoizedProps = null;
   if (alternate !== null) {
-    alternate.return = null;
-    alternate.child = null;
-    alternate.memoizedState = null;
-    alternate.updateQueue = null;
-    alternate.dependencies = null;
+    detachFiber(alternate);
   }
 }