feat: "rejectionhandled" Web event and "rejectionHandled" Node event (#21875)

This commit adds support for "rejectionhandled" Web Event and
"rejectionHandled" Node event.

```js
import process from "node:process";

process.on("rejectionHandled", (promise) => {
  console.log("rejectionHandled", reason, promise);
});

window.addEventListener("rejectionhandled", (event) => {
  console.log("rejectionhandled", event.reason, event.promise);
});
```

---------

Co-authored-by: Matt Mastracci <matthew@mastracci.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/cli/tsc/dts/lib.deno.window.d.ts b/cli/tsc/dts/lib.deno.window.d.ts
index c518c5356..eaab7c3c2 100644
--- a/cli/tsc/dts/lib.deno.window.d.ts
+++ b/cli/tsc/dts/lib.deno.window.d.ts
@@ -12,6 +12,7 @@
 declare interface WindowEventMap {
   "error": ErrorEvent;
   "unhandledrejection": PromiseRejectionEvent;
+  "rejectionhandled": PromiseRejectionEvent;
 }
 
 /** @category Web APIs */
@@ -25,6 +26,9 @@ declare interface Window extends EventTarget {
   onunhandledrejection:
     | ((this: Window, ev: PromiseRejectionEvent) => any)
     | null;
+  onrejectionhandled:
+    | ((this: Window, ev: PromiseRejectionEvent) => any)
+    | null;
   close: () => void;
   readonly closed: boolean;
   alert: (message?: string) => void;