fix: replace window.location with Next.js router for client-side navigation

- Replace window.location.href with router.push() + router.refresh() in UserDropdown logout
- Replace window.location.href with router.push() in CreateSearchSpaceDialog
- Replace window.location.reload() with router.refresh() in login page retry action
- Prevents full page reloads and preserves React state during in-app navigation

surfsense_web/app/(home)/login/page.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { AnimatePresence, motion } from "motion/react";
+import { useRouter } from "next/navigation";
 import { useSearchParams } from "next/navigation";
 import { useTranslations } from "next-intl";
 import { Suspense, useEffect, useState } from "react";
@@ -16,6 +17,7 @@ import { LocalLoginForm } from "./LocalLoginForm";
 function LoginContent() {
 	const t = useTranslations("auth");
 	const tCommon = useTranslations("common");
+	const router = useRouter();
 	const [authType, setAuthType] = useState<string | null>(null);
 	const [isLoading, setIsLoading] = useState(true);
 	const [urlError, setUrlError] = useState<{ title: string; message: string } | null>(null);
@@ -79,7 +81,7 @@ function LoginContent() {
 			if (shouldRetry(error)) {
 				toastOptions.action = {
 					label: "Retry",
-					onClick: () => window.location.reload(),
+					onClick: () => router.refresh(),
 				};
 			}