Andrew Scott 189807ef04 refactor(router): Build out integration with browser Navigation API (#64905) ...

This further builds out the Router integration with the platform
Navigation API. Key features in this state include:

* History restoration via direct platform APIs rather than markers left on
  `history.state`. This means more guaranteed correctness and less
  internal code to compute traversal restorations.
* Ability to observe navigations triggered outside the Router APIs.
  Practically speaking, this means some navigations can be performed
  through the platform rather than requiring `Router.navigate`. Note
  that because the `NavigateEvent` is never intercepted at this point of
  the implementation, regular anchor tags cannot be used because they
  will still trigger a popstate navigation.

This implementation does _not_ intercept the `NavigateEvent` but future
iterations should. By omitting the interception, we are missing out on
features such as:

* Platform-supported scroll and focus reset
* Holding the navigate event open for the duration of the router
  navigation, allowing for a visual loading indicator in the browser
* Support for intercepting navigations from regular anchor tags (e.g.
  not `RouterLink`s) and converting those to SPA navigations.

PR Close #64905

2025-11-06 17:42:04 +00:00

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