Trying to install - Could not find a version that satisfies the requirement poetry-core>=1.0.0

Hi,

I am trying to install the label studio ML backend to run my own custom model and have been following this [guide](https://github.com/HumanSignal/label-studio-ml-backend?tab=readme-ov-file#advanced-usage-develop-your-model).

- note i am installing this on a computer which has restricted access to the internet so i have manually downlaoded the whl file for all requirements
- the SDK is installed locally and doesn't use the http link

when i run:

`pip install -e . --no-index`

I get the following error message:

```
Installing build dependencies ... error
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> [2 lines of output]
ERROR: Could not find a version that satisfies the requirement poetry-core>=1.0.0 (from versions: none)
ERROR: No matching distribution found for poetry-core>=1.0.0
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip
```

I have checked the following:
- pip list shows poetry and poetry installed
- they are both on version 2.1.1
- I can type poetry and all the commands show up indicating thats its installed

Please let me know if you have any advise or need any more information to get this issue resolve

Thanks