[bug]: `getObject` has no generic type

### Description

`getObject` has no generic type but `getObjects` does. In v4 there was a generic type for getObject.

I found a PR to add it here: https://github.com/algolia/algoliasearch-client-javascript/pull/1546 but it was closed (supposedly fixed).

### Client

Search

### Version

5.40.1

### Relevant log output

```shell

```