Fix possible panic (#34508)

modules/util/map.go

@@ -0,0 +1,13 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package util
+
+func GetMapValueOrDefault[T any](m map[string]any, key string, defaultValue T) T {
+	if value, ok := m[key]; ok {
+		if v, ok := value.(T); ok {
+			return v
+		}
+	}
+	return defaultValue
+}