Repository: facebook/react
Pull request: Support beforetoggle/toggle events for dialog

<!--
  Thanks for submitting a pull request!
  We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory.

  Before submitting a pull request, please make sure the following is done:

  1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`.
  2. Run `yarn` in the repository root.
  3. If you've fixed a bug or added code that should be tested, add tests!
  4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development.
  5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`.
  6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect".
  7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`).
  8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files.
  9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`).
  10. If you haven't already, complete the CLA.

  Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html
-->

## Summary

<!--
 Explain the **motivation** for making this change. What existing problem does the pull request solve?
-->

I don't know if this is the correct change to make, but I figured a PR is maybe more productive than an issue. Right now, the dialog element emits `beforetoggle`/`toggle` events that React doesn't support, as they're non bubbling and it seems all non-bubbling event listeners need to be hard coded. This PR adds support for these by adding the `listenToNonDelegatedEvent` calls to the dialog element to get these events working. 

Read more about these events on MDN: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/toggle_event.

## How did you test this change?

<!--
  Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface.
  How exactly did you verify that your PR solves the issue you wanted to solve?
  If you leave this empty, your PR will very likely be closed.
-->
I haven't tested this change.


Changed files:
filename: packages/react-dom-bindings/src/client/ReactDOMComponent.js
patch: @@ -1280,6 +1280,8 @@ export function setInitialProperties(
       return;
     }
     case 'dialog': {
+      listenToNonDelegatedEvent('beforetoggle', domElement);
+      listenToNonDelegatedEvent('toggle', domElement);
       listenToNonDelegatedEvent('cancel', domElement);
       listenToNonDelegatedEvent('close', domElement);
       break;

filename: packages/react-dom/src/__tests__/ReactDOMEventPropagation-test.js
patch: @@ -1302,6 +1302,38 @@ describe('ReactDOMEventListener', () => {
       });
     });
 
+    it('onBeforeToggle Dialog API', async () => {
+      await testEmulatedBubblingEvent({
+        type: 'dialog',
+        reactEvent: 'onBeforeToggle',
+        reactEventType: 'beforetoggle',
+        nativeEvent: 'beforetoggle',
+        dispatch(node) {
+          const e = new Event('beforetoggle', {
+            bubbles: false,
+            cancelable: true,
+          });
+          node.dispatchEvent(e);
+        },
+      });
+    });
+
+    it('onToggle Dialog API', async () => {
+      await testEmulatedBubblingEvent({
+        type: 'dialog',
+        reactEvent: 'onToggle',
+        reactEventType: 'toggle',
+        nativeEvent: 'toggle',
+        dispatch(node) {
+          const e = new Event('toggle', {
+            bubbles: false,
+            cancelable: true,
+          });
+          node.dispatchEvent(e);
+        },
+      });
+    });
+
     it('onVolumeChange', async () => {
       await testEmulatedBubblingEvent({
         type: 'video',