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

router

Is this a regression?

No

Description

We're facing errors reported to Rollbar: AbortError Old view transition aborted by new view transition..

This is because calling document.startViewTransition() twice synchronously:

• Chrome: continues applying the first call's transition
• Safari: aborts the first call's transition and throws

// WebKit

if (RefPtr activeViewTransition =  document.activeViewTransition())
  activeViewTransition->skipViewTransition(Exception { ExceptionCode::AbortError, "Old view transition aborted by new view transition."_s });