Description

This PR aims to add dev dependencies to the satisfiability check of the lock file.
By Dev dependencies we mean all the dependencies of that dev dep ( but not the dep itself ).
Example: if we have sdl_example in dev, we want to collect all their host + build + run requirements, but not the sdl_example - and verify that all the required dependencies are present in the lock file.

How Has This Been Tested?

By running pixi install --locked in the examples/develop/cpp-sdl

AI Disclosure

• This PR contains AI-generated content.
  • I have tested any AI-generated content in my PR.
  • I take responsibility for any AI-generated content in my PR.

Tools: Claude

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas