Remove renderPhaseUpdates Map (#17625)

* Remove renderPhaseUpdates Map

Follow up to #17484, which was reverted due to a bug found in www.

* Failing test: Dropped updates

When resetting render phase updates after a throw, we should only clear
the pending queue of hooks that were already processed.

* Fix non-render-phase updates being dropped

Detects if a queue has been processed by whether the hook was cloned.
If we change the implementation to an array instead of a list, we'll
need some other mechanism to determine whether the hook was processed.

* Regression test: startTransition in render phase

useTransition uses the state hook as part of its implementation, so we
need to fork it in the dispatcher used for re-renders, too.

packages/react-reconciler/src/ReactFiberBeginWork.js

@@ -137,7 +137,7 @@ import {
   calculateChangedBits,
   scheduleWorkOnParentPath,
 } from './ReactFiberNewContext';
-import {resetHooks, renderWithHooks, bailoutHooks} from './ReactFiberHooks';
+import {renderWithHooks, bailoutHooks} from './ReactFiberHooks';
 import {stopProfilerTimerIfRunning} from './ReactProfilerTimer';
 import {
   getMaskedContext,
@@ -1407,7 +1407,8 @@ function mountIndeterminateComponent(
     workInProgress.tag = ClassComponent;
 
     // Throw out any hooks that were used.
-    resetHooks();
+    workInProgress.memoizedState = null;
+    workInProgress.updateQueue = null;
 
     // Push context providers early to prevent context stack mismatches.
     // During mounting we don't know the child context yet as the instance doesn't exist.