Unhandled promise rejections aren't properly reported in tests

Tái hiện vấn đề với spec được cung cấp trong một dự án Angular mới và chạy npm t, so sánh các cấu hình zoneless và zone.js. Các tệp dự án liên quan không được nêu tên; hãy dùng thiết lập kiểm thử và bản tái hiện tối thiểu tại https://github.com/sgravrock/ng-unhandled-rejection làm điểm bắt đầu. Hoàn tất khi spec báo cáo chính xác một rejection chưa được xử lý trong cả hai cấu hình.

Which @angular/* package(s) are the source of the bug?

Don't known / other

Is this a regression?

Yes

Description

In an Angular project that uses zone.js, unhandled promise rejections are not reported. In a zoneless Angular project, they are reported twice.

Steps to reproduce:

1. Create a new Angular project.
2. Paste the code below into a spec file.
3. npm t

it('triggers an unhandled rejection', function(done) {
	Promise.reject(new Error('nope'));

	// Make sure the unhandled rejection event has plenty of time to fire before
	// Jasmine finishes running. This helps distinguish between timing issues
	// (event is firing a bit later than usual) and the event not firing at all.
	setTimeout(done, 1000);
});

Expected result: The spec should fail with a single "Unhandled promise
rejection: Error: nope" error.

Observed:

• If the project was set up zoneless, the spec fails with two copies of the expected error.
• Otherwise, the spec passes.

Please provide a link to a minimal reproduction of the bug

https://github.com/sgravrock/ng-unhandled-rejection

Please provide the exception or error you saw

Please provide the environment you discovered this bug in (run ng version)

_                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 20.1.5
Node: 20.19.0
Package Manager: npm 10.8.2
OS: darwin arm64

Angular: 20.1.6
... common, compiler, compiler-cli, core, forms
... platform-browser, router

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.2001.5
@angular-devkit/core         20.1.5
@angular-devkit/schematics   20.1.5
@angular/build               20.1.5
@angular/cli                 20.1.5
@schematics/angular          20.1.5
rxjs                         7.8.2
typescript                   5.8.3
zone.js                      0.15.1

Anything else?

No response