Update entry point exports (#21488)

The following APIs have been added to the `react` stable entry point:
* `SuspenseList`
* `startTransition`
* `unstable_createMutableSource`
* `unstable_useMutableSource`
* `useDeferredValue`
* `useTransition`

The following APIs have been added or removed from the `react-dom` stable entry point:
* `createRoot`
* `unstable_createPortal` (removed)

The following APIs have been added to the `react-is` stable entry point:
* `SuspenseList`
* `isSuspenseList`

The following feature flags have been changed from experimental to true:
* `enableLazyElements`
* `enableSelectiveHydration`
* `enableSuspenseServerRenderer`

packages/react-devtools-shared/src/devtools/views/Components/InspectedElementContext.js

@@ -10,7 +10,7 @@
 import * as React from 'react';
 import {
   createContext,
-  unstable_startTransition as startTransition,
+  startTransition,
   unstable_useCacheRefresh as useCacheRefresh,
   useCallback,
   useContext,

packages/react-devtools-shared/src/devtools/views/Components/InspectedElementErrorsAndWarningsTree.js

@@ -11,7 +11,7 @@ import * as React from 'react';
 import {
   useContext,
   unstable_useCacheRefresh as useCacheRefresh,
-  unstable_useTransition as useTransition,
+  useTransition,
 } from 'react';
 import Button from '../Button';
 import ButtonIcon from '../ButtonIcon';

packages/react-devtools-shared/src/devtools/views/Components/KeyValue.js

@@ -8,12 +8,7 @@
  */
 
 import * as React from 'react';
-import {
-  unstable_useTransition as useTransition,
-  useContext,
-  useRef,
-  useState,
-} from 'react';
+import {useTransition, useContext, useRef, useState} from 'react';
 import EditableName from './EditableName';
 import EditableValue from './EditableValue';
 import NewArrayValue from './NewArrayValue';

packages/react-devtools-shared/src/devtools/views/Components/TreeContext.js

@@ -34,7 +34,7 @@ import {
   useMemo,
   useReducer,
   useRef,
-  unstable_startTransition as startTransition,
+  startTransition,
 } from 'react';
 import {createRegExp} from '../utils';
 import {BridgeContext, StoreContext} from '../context';