Cannot search code on forked repos.

## Bug Report

### Steps to Reproduce:

Attempted to search code for:
* https://github.com/finos/kdb-studio
* https://github.com/finos/qPython

### Expected Result:
Search results. eg. Searching for `_writer_map` in qPython should include:
* https://github.com/finos/qPython/blob/main/qpython/qwriter.py#L54

### Actual Result:
GitHub returns, "Sorry, forked repositories are not currently searchable."

### Environment:
Searched using Google Chrome.

### Additional Context:

These `kdb-studio` and `qPython` were forked into FINOS because:
1. The original maintainers were no longer active.
2. These projects are still used at FINOS member organizations and required updating.

In a way, these forks are the new de-facto mainline. Not being able to search is added friction for the developer experience and makes the the projects seem less official than the unmaintained repositories.