Type inferences broke as a result of migrating to ts strict mode in
#12298. This leads to compile-time errors that may prevent build.
Here is an example:
```ts
export interface Page {
id: string;
slug: string;
title: string;
// ...
}
/**
* Type 'Page' does not satisfy the constraint 'Record<string, unknown>'.
* Index signature for type 'string' is missing in type 'Page'.
*/
const { data } = useLivePreview<Page>({
depth: 2,
initialData: initialPage,
serverURL: PAYLOAD_SERVER_URL,
})
```
The problem is that Payload generated type _interfaces_ do not satisfy
the `Record<string, unknown>` type. This is because interfaces are a
possible target for declaration merging, so their properties are not
fully known. More details on this
[here](https://github.com/microsoft/TypeScript/issues/42825).
This PR also cleans up the JSDocs.
c83e791014