"Find Wheel" now handles platform-specific artifacts during selection

[scbedd]

The code being adjusted in this PR is used at the base of every tox environment that is testing the specifically built artifact from the previous stage. We want to test what we build, and this code is what ensures that.

Logic Before:

• Search for all wheels that match package name and version
• Find the whl that matches our major py version
• Return that

Logic After:

• Search for all wheels that match package name and version
• Get list of compatible tags for our currently invoking interpreter, using pip
• Walk the list of wheels for the package we want, checking each one against the set of compatible tags
• On first compatible tag, return the wheel

This resolves #9613 and is a prerequisite for #28211

[mccoyp]

Mostly nits about .format, only one comment about what looks like a hanging variable

[mccoyp]

Aside from the small things I commented on, LGTM