Calculations and actions on upload nodes are not supported

### Expected Behaviour

Using setvalue to update an upload control should work. While it doesn't make sense to compute a binary file, if you compute a valid `jr:` url then the resource should be loaded. This also applies to calculate on the `bind` element.

This can be useful particularly for annotating one of a set of images.

### Observed Behaviour

Both setvalue and calculate silently no-op.

### Reproduction Steps

Form (XML or XLSX file): Form and attachments on the forum: https://forum.getodk.org/t/collect-2026-3-0-default-image-inline-preview-missing-take-choose-disabled-crash-on-null-annotation/58380/4

Steps:
1. Load the form
2. Select a radio button in the first field
3. You should see the image load on the annotate field below

For the calculate version, the simplest form has a bind something like this...

```xml

```

### Additional Context

Nodes like InputControl extend ValueNode, but UploadControl does not. This means that `createInstanceValueState` is never called so calculates are never registered. Once the calculate is registered we'll need a way to set the _string_ value of the UploadControl, and then that can be used for the setvalue actions too.