<!-- Please provide a clear and concise description of what the bug is. Include screenshots if needed. Please test using the latest version of the relevant React packages to make sure your issue has not already been fixed. --> React version: ``` "react": "18.3.0-next-522f47345-20220614", "react-dom": "18.3.0-next-522f47345-20220614", ``` ## Steps To Reproduce ```jsx <span hidden="until-found">Hello React<span> ``` <!-- Your bug will get fixed much faster if we can run your code and it doesn't have dependencies other than React. Issues without reproduction steps or code examples may be immediately closed as not actionable. --> Link to code example: https://codesandbox.io/s/headless-violet-ygn593 ## The current behavior React will turn hidden into a boolean attribute and removes "until-found":  ## The expected behavior React does not strip "until-found" to allow using [hidden-until-found in Chrome 102+](https://developer.chrome.com/articles/hidden-until-found/) for better SEO and accessibility.
React version:
Steps To Reproduce
Link to code example:
https://codesandbox.io/s/headless-violet-ygn593
The current behavior
React will turn hidden into a boolean attribute and removes "until-found":
The expected behavior
React does not strip "until-found" to allow using hidden-until-found in Chrome 102+ for better SEO and accessibility.