[Suggestion]: add explanation & illustration for the Note in the 'Passing state deeply with context' chapter

Summary

Currently, in the Note, it says "This example uses heading levels because they show visually how nested components can override context.". However, it is unclear what this sentence means. What does it mean for a nested component to override context? I suspect that 'because they show visually how nested components can override context' is not correct, or if correct, it needs clear explanation what it means, because I personally don't get it (and I don't want to ask GPT to get a wrong answer...).

If left unchanged, this sentence risks confusing millions of learners in my opinion (myself included).

Page

https://react.dev/learn/passing-data-deeply-with-context

Details

The sentence "This example uses heading levels because they show visually how nested components can override context." is not explained. It would be useful to explain this much more explicitly. It's like throwing a sentence at a super abstract level... (which is not helpful for learners).

从 issue 中链接的 “Passing data deeply with context” 页面开始，阅读关于标题级别以及嵌套组件覆盖 context 的句子附近的 Note。通过解释和图示说明示例展示了什么，从而澄清这一表述；完成标准是学习者无需外部解释即可理解其中的关系。