[css-navigation-1] Add committed phase to navigation state (#14302)

This was erronously omitted.

Author: noamr

css-navigation-1/Overview.bs

@@ -36,6 +36,8 @@ url: https://html.spec.whatwg.org/multipage/browsing-the-web.html#has-been-revea
     type: dfn; spec: html; text: has been revealed;
 url: https://html.spec.whatwg.org/multipage/browsing-the-web.html#ongoing-navigation
     type: dfn; spec: html; text: ongoing navigation;
+url: https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-navigateevent-interception-state
+    type: dfn; spec: html; text: interception state;
 url: https://drafts.csswg.org/css-view-transitions-1/#capture-the-image
     type: dfn; spec: css-view-transitions-1; text: capture the image;
 </pre>
@@ -724,6 +726,8 @@ To get the <dfn>current navigation state</dfn> of a {{Document}} |document|:
 
 1. If |navigateEvent| is null, return null.
 
+1. If |navigateEvent|'s [=interception state=] is `"committed"` or `"scrolled"`, set |phase| to `committed`.
+
 1. Return a new [=navigation state=] whose
     [=navigation state/old URL=] is |document|'s [=Document/URL=],
     [=navigation state/new URL=] is |navigateEvent|'s {{NavigateEvent/destination}}'s {{NavigationDestination/url}},
@@ -750,6 +754,7 @@ To get the <dfn>current navigation URL</dfn> given a {{Document}} |document| and
 
 : ''at''
 :: |state|'s [=navigation state/new URL=] if |state|'s [=navigation state/phase=] is `committed`; Otherwise |state|'s [=navigation state/old URL=].
+
 </dl>
 
 To get the <dfn>current navigation type</dfn> of a [=/document=] |document|: