Move ErrorHandlers to react-native/src/private (#45876)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/45876

Changelog: [internal]

Reviewed By: dmytrorykun

Differential Revision: D60597776

fbshipit-source-id: 1093aee0f2b84312b55a2b0c22e2b1576c60e26e

packages/react-native/Libraries/ReactNative/RendererImplementation.js

@@ -20,7 +20,7 @@ import {
   onCaughtError,
   onRecoverableError,
   onUncaughtError,
-} from '../Core/ErrorHandlers';
+} from '../../src/private/renderer/errorhandling/ErrorHandlers';
 import {type RootTag} from './RootTag';
 export function renderElement({
   element,

packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap

@@ -4287,26 +4287,6 @@ declare module.exports: symbolicateStackTrace;
 "
 `;
 
-exports[`public API should not change unintentionally Libraries/Core/ErrorHandlers.js 1`] = `
-"type ErrorInfo = {
-  +componentStack?: ?string,
-  +errorBoundary?: ?React$Component<any, any>,
-};
-declare export function onUncaughtError(
-  errorValue: mixed,
-  errorInfo: ErrorInfo
-): void;
-declare export function onCaughtError(
-  errorValue: mixed,
-  errorInfo: ErrorInfo
-): void;
-declare export function onRecoverableError(
-  errorValue: mixed,
-  errorInfo: ErrorInfo
-): void;
-"
-`;
-
 exports[`public API should not change unintentionally Libraries/Core/ExceptionsManager.js 1`] = `
 "declare class SyntheticError extends Error {
   name: string;

packages/react-native/src/private/renderer/errorhandling/ErrorHandlers.js

@@ -8,11 +8,12 @@
  * @flow strict
  */
 
-'use strict';
+import type {ExtendedError} from '../../../../Libraries/Core/ExtendedError';
 
-import type {ExtendedError} from './ExtendedError';
-
-import {SyntheticError, handleException} from './ExceptionsManager';
+import {
+  SyntheticError,
+  handleException,
+} from '../../../../Libraries/Core/ExceptionsManager';
 
 type ErrorInfo = {
   +componentStack?: ?string,