Remove editable installs from CI
The meson-python team does not suggest using editable installs in a CI environment. See also https://github.com/mesonbuild/meson-python/issues/716#issuecomment-2580286829
Not sure if this should go 2.3 or 3.0 - probably the former? This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Not actively working on this - let's clear the queue