Document Text Node Styling Incompatibility

It is not intuitive that `Text` nodes - which require the `Node` component - will silently break the styling options on `Node`. This should be documented on the [`Text`](https://docs.rs/bevy/latest/bevy/prelude/struct.Text.html) component along with the recommendation of placing those options on a parent entity instead.

Start with the Text component documentation at the linked docs.rs page and review how Node styling options are described. Document that Text nodes require Node and can silently break Node styling options, then recommend placing those options on a parent entity instead; done means this guidance appears on the Text documentation.

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