Fix: Use getOffscreenContainerProps

The type of these props is different per renderer. An oversight
from facebook#21960. Unfortunately wasn't caught by Flow because fiber props
are `any`-typed.

Author: acdlite

packages/react-reconciler/src/ReactFiberBeginWork.new.js

@@ -2376,10 +2376,10 @@ function updateSuspenseFallbackChildren(
       const isHidden = true;
       const currentOffscreenContainer = currentPrimaryChildFragment.child;
       const offscreenContainer: Fiber = (primaryChildFragment.child: any);
-      const containerProps = {
-        hidden: isHidden,
+      const containerProps = getOffscreenContainerProps(
+        isHidden ? 'hidden' : 'visible',
         primaryChildren,
-      };
+      );
       offscreenContainer.pendingProps = containerProps;
       offscreenContainer.memoizedProps = containerProps;
       completeSuspendedOffscreenHostContainer(

packages/react-reconciler/src/ReactFiberBeginWork.old.js

@@ -2376,10 +2376,10 @@ function updateSuspenseFallbackChildren(
       const isHidden = true;
       const currentOffscreenContainer = currentPrimaryChildFragment.child;
       const offscreenContainer: Fiber = (primaryChildFragment.child: any);
-      const containerProps = {
-        hidden: isHidden,
+      const containerProps = getOffscreenContainerProps(
+        isHidden ? 'hidden' : 'visible',
         primaryChildren,
-      };
+      );
       offscreenContainer.pendingProps = containerProps;
       offscreenContainer.memoizedProps = containerProps;
       completeSuspendedOffscreenHostContainer(