Navigation Screen: Fetch all menus for display in <select> menu (#22591)

Use an unbounded query (per_page=-1) when fetching menus for display in
the Navigation Screen. Note that fetchAllMiddleware() will translate
this per_page=-1 query into several per_page=100 requests.

packages/edit-navigation/src/components/menus-editor/index.js

@@ -21,9 +21,10 @@ import MenuEditor from '../menu-editor';
 export default function MenusEditor( { blockEditorSettings } ) {
 	const { menus, hasLoadedMenus } = useSelect( ( select ) => {
 		const { getMenus, hasFinishedResolution } = select( 'core' );
+		const query = { per_page: -1 };
 		return {
-			menus: getMenus(),
-			hasLoadedMenus: hasFinishedResolution( 'getMenus' ),
+			menus: getMenus( query ),
+			hasLoadedMenus: hasFinishedResolution( 'getMenus', [ query ] ),
 		};
 	}, [] );