Improve Enzyme's type declaration

[acelaya]

Improve a bit our ReactWrapper definition based on the methods/properties we use and definitely typed definition.

The official definition has more stuff, but I decided to keep it simple as a POC. I checked which methods we use in client, but we may need to enhance this definition based on the usage in other projects.

Considerations

We are currently not shipping these types with the library, but we probably should, otherwise downstream code won't benefit of these changes.

[acelaya]

We have agreed the right way to solve this is to keep enzyme.d.ts as is, as those are the only methods from enzyme that this library relies on.

All the extra methods will be exposed from this library as the type that our own mount implementation returns, and that type definition will be shipped with the library.

More details on the discussion can be found in slack https://hypothes-is.slack.com/archives/C1M8NH76X/p1734433461012719