Equinox integer field compiled into docs as `Any`

### What's the problem?

`coreax.solvers.ExplicitSizeSolver.coreset_size` type renders in the compiled documentation as `Any`. It should be either an Equinox field of type `int`, or perhaps clearer as just `int`.

A possible solution might be to expand the functionality of `typehints_formatter` in `documentation/source/conf.py`.

### How can we reproduce the issue?

View documentation.

### Python version

3.12

### Package version

0.2.1

### Operating system

Windows

### Other packages

_No response_

### Relevant log output

_No response_