`pip check` fails on amd64 linux and macOS

[drewbrew]

👋🏼 Hi, it looks like pip 24.2 causes ninja to register as incompatible with my local OS due to something in the package's metadata tags.

Environments tested (all amd64):

• Python 3.9 through 3.12 on WSL2 (Ubuntu 22.04 LTS)
• Python 3.9 on GitHub Actions runners (both Ubuntu 22.04 and 24.04)
• Python 3.9 on macOS

Steps to replicate:

1. Create a new virtualenv (python3.12 -m venv .venv)
2. pip install --upgrade pip
3. pip install ninja
4. pip check

Expected behavior:

• Output saying there are no package conflicts found

Actual behavior:

• ninja 1.11.1.1 is not supported on this platform