This patch doesn't structurally change the text layer: it just adds some aria-owns
attributes to some spans.
The aria-owns attribute expect to have an element id, hence it's why it adds back an
id on the element rendering an annotation, but this id is built in using crypto.randomUUID
to avoid any potential issues with the hash in the url.
The elements in the annotation layer are moved into the DOM in order to have them in the
same "order" as they visually are.
The overall goal is to help screen readers to present to the user the annotations as
they visually are and as they come in the text flow.
It is clearly not perfect, but it should improve readability for some people with visual
disabilities.
Currently all of these factories take a bunch of (randomly ordered) parameters, which first of all doesn't look that nice in the `PDFPageView`-class when some parameters are optional.
Furthermore, it also makes deprecation/removal of any existing parameter a *potentially* breaking change.
Finally, using an Object will provide a small amount of "documentation" at the call-site which isn't really the case with a bunch of "regular" parameters.
Note that all of the `viewer component` examples still work as-is with this patch, which is why I don't believe that we necessarily have to deprecate in the usual fashion.
This patch, first of all, removes circular dependencies in the TypeScript definitions. Secondly, it also moves `RenderingStates` into `web/ui_utils.js` to break another type-dependency and directly use the `XfaLayerBuilder` during XFA-printing.
Finally, note that this patch *slightly* reduces the size of the default viewer (e.g. in the `MOZCENTRAL` build) by not having to bundle code which is completely unused.
