Increase consistency between navigation with and without ViewTransitions

[martrapp]

Changes

Greater consistency between navigations with and without <ViewTransitions>:

• New for direct calls to navigate(): Navigation to a URL whose origin does not match the origin of the current page is excluded from view transition processing and triggers the standard navigation of the browser.
• New: Navigation to the current page (= same path name and same search parameters) without a hash fragment triggers view transition processing.
• New for form submission: Navigation to a non-empty hash target on the current page does not trigger view transitions, but updates the browser history directly and scrolls to the target position.

Testing

Had to fix one test because page.back() does not wait for asynchronous actions.

Docs

Details have never been documented before, so there is nothing to update.

[changeset-bot]

🦋 Changeset detected

Latest commit: 2de16c3

The changes in this PR will be included in the next version bump.

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[github-actions]

This PR is blocked because it contains a minor changeset. A reviewer will merge this at the next release if approved.

merging for 4.0

[natemoo-re]

Code LGTM, would love to update the changeset before merging, though!

[github-actions]

This PR is blocked because it contains a minor changeset. A reviewer will merge this at the next release if approved.

merging for 4.0