fix: follow undergraduate login links and capture live history URLs

mobile/test/support/fake_school_web.dart

@@ -44,6 +44,7 @@ class FakeSchoolWeb extends PlatformWebViewController {
   FakeSchoolWeb(super.params) : super.implementation();
   final loads = <String>[];
   String? url;
+  String? documentUrl;
   Future<Object> Function(String)? javascript;
   Future<void> Function(Uri)? request;
   @override
@@ -63,7 +64,9 @@ class FakeSchoolWeb extends PlatformWebViewController {
   Future<String?> currentUrl() async => url;
   @override
   Future<Object> runJavaScriptReturningResult(String script) =>
-      javascript?.call(script) ?? Future.value(false);
+      script == 'location.href'
+      ? Future.value(documentUrl ?? url ?? 'about:blank')
+      : javascript?.call(script) ?? Future.value(false);
   @override
   Future<void> clearCache() async {}
   @override