feat: support deep freeze in lazy-render

[doyuli]

This PR extends the performance optimization capability of LazyRender to support deeper levels of update freezing.

• Before: When moving out of the viewport, only the updates of direct child components could be frozen. Any nested sub-components or recursive structures continued to run in the background, consuming CPU resources.

• After: Introduced a recursive detection mechanism. By walking through the component tree, even grandchildren or infinite recursive components can now be precisely "frozen" when leaving the viewport.

Its deep behavior can be controlled via props.deep

• deep: false: Maintains original behavior, freezing only the immediate child.

• deep: true: Enables full recursive freezing for the entire component subtree.

• deep: number: Specifies a custom maximum depth for freezing.

Usage Example

<LazyRender :deep="true">
  <ComplexRecursiveComponent />
</LazyRender>

<LazyRender :deep="2">
  <DeepTreeComponent />
</LazyRender>