When hovering over a deprecated thing in your code (ie. in Javascript marked with a @deprecated tag in the comment block above it) then you get a window that says the thing is deprecated, with a “Fix with AI” button. The prompt that gets sent to the chat just tells the model “this is deprecated, how do we fix it”, but very often a deprecation notice includes additional information about what to use instead.
For example, in JS you might see something like
/**
@deprecated - use "doANewThing" instead
*/
const doAThing = () => {}
If the AI was prompted with that additional context (which is visible in the popover window when you hover) then I think the AI fix for deprecated stuff would be much more useful.