If we have a link contained within a spoiler, we want to prevent the link from being visible/clickable until the spoiler is revealed. Here, we introduce `MarkdownSpoilerContext` since we need to keep
track, on a per-spoiler basis, if there is a link within a spoiler. If there is a spoiler link, and it is not yet revealed, we do not want the `onPress` for `MarkdownLink` to fire.
The hierarchy in `react-devtools` for a `MarkdownLink` contained in a `MarkdownSpoiler` is:
```
MarkdownParagraph
MarkdownSpoiler
MarkdownLink
```
This is why I used `Context`, and `text[0].props.target` is only valid if a `MarkdownLink` is rendered below a `MarkdownSpoiler`, since `MarkdownLink` has a `target` prop.
Linear Task: https://linear.app/comm/issue/ENG-2233/make-spoiler-components-block-link-reveal-click-until-the-spoiler-is