[tabs] Fixed push state to push the full url from the pathname on.

With pushState is being called with the hash string only (e.g., "#tab:...") as the URL argument — when the second arg (title) is "" and third arg is a URL that starts with "#", some browsers and environments treat that as a full URL replacement and strip the path.

src/pg/patterns/core/tabs/_tabs.js

@@ -1,4 +1,4 @@
-/* DS2 core (c) 2024–2026 Alexander McIlwraith
+/* DS2 core (c) 2024-2026 Alexander McIlwraith
    Released under Creative Commons Attribution-ShareAlike 4.0 International
 */
 
@@ -154,7 +154,7 @@ export function init(container = document, spacer = true) {
 					window.history.pushState(
 						{ tab: tabId },
 						"",
-						hash
+						`${location.pathname}${location.search}${hash}`
 					);
 
 					pushStateCount++;