PHP execution doesn't catch and rethrow Asyncify wasm crashes

[bgrgicak]

Prerequisites

• I have carried out troubleshooting steps and I believe I have found a bug.
• I have searched for similar bugs in both open and closed issues and cannot find a duplicate.

Describe the bug

The Asyncify web version of Playground doesn't catch wasm crashes while executing a PHP runtime function.
As a result, the error isn't rethrown and won't be collected by the logger or show the error modal on the website.

Expected behavior

An Asyncify wasm crash should be caught while executing a PHP runtime function and rethrown, resulting in the error modal to appear.

Actual behavior

A Unhandled Promise Rejection: RuntimeError: Unreachable code should not be executed (evaluating 'e(...t)') error is thrown in the browser console.

Steps to reproduce

1. Open a browser that uses Asyincify (Safari)
2. Trigger a wasm crash in Playground by opening this URL
3. See the error in the browser console
4. See that the error modal didn't load

Isolating the problem

• I have deactivated other plugins and confirmed this bug occurs when only this plugin is active.
• This bug happens with a default WordPress theme active.
• I can reproduce this bug consistently using the steps above.

[bgrgicak]

I'm able to catch the error if I add this code after this.#wasmErrorsTarget?.addEventListener in runExecutionFunction

This is obviously the wrong place for this code, and it is only demonstrating the issue.

const globalScope =
	typeof self !== 'undefined'
		? self
		: typeof globalThis !== 'undefined'
			? globalThis
			: null;
if (globalScope) {
	globalScope.addEventListener(
		'unhandledrejection',
		(event) => {
			this.#wasmErrorsTarget?.dispatchEvent(
				new ErrorEvent('error', {
					error: event.reason,
				})
			);
		}
	);
}