React UI Notification Component

The `rc-notification` package provides a foundational React UI component for displaying transient notifications such as toasts or alerts. It functions as a low-level, unstyled primitive, primarily serving as a building block for higher-level UI libraries, most notably Ant Design's notification system. The current stable version, 5.6.4, receives ongoing maintenance, with recent updates focused on bug fixes and performance enhancements within its 5.x series. It's crucial for developers to note that a separate, newer package, `@rc-component/notification`, has also been released. This newer package introduces additional features and potentially different APIs, marking a distinct evolution from `rc-notification`. This distinction is important for selecting the correct package based on project requirements and desired feature set, as the two packages have diverged in their development paths.