Make handling of freq_interp_kind flexible for future pyuvdata changes

[bhazelton]

Description

This fixes some things that break in a pending pyuvdata PR (RadioAstronomySoftwareGroup/pyuvdata#1378).

For now, this just makes sure we track freq_interp_kind on the BeamList object and either set it on the object or pass it to the interp functions depending on the version of pyuvdata (assessed by whether the attribute exists on UVBeam).

Long term, once we require a version of pyuvdata that doesn't have it as an attribute, I think we can entirely remove the uvb_params handling in telescope.py which will clean up that code substantially.

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Reference simulation update or replacement
• Documentation change (documentation changes only)
• Version change
• Build or continuous integration change

Checklist:

For all pull requests:

• I have read the contribution guide.
• My code follows the code style of this project.

Bug fix checklist:

• My fix includes a new test that breaks as a result of the bug (if possible).
• All new and existing tests pass.
• I have checked that I reproduce the reference simulations or if there are differences they are explained below (if appropriate). If there are changes that are correct, I will update the reference simulation files after this PR is merged.
• I have checked (e.g., using the benchmarking tools) that this change does not significantly increase typical runtimes. If it does, I have included a justification in the comments on this PR.
• I have updated the CHANGELOG.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5bc255a) 99.49% compared to head (b20be8b) 99.50%.

Additional details and impacted files

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##             main     #442   +/-   ##
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  Coverage   99.49%   99.50%           
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  Files          12       12           
  Lines        2199     2210   +11     
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+ Hits         2188     2199   +11     
  Misses         11       11           

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[steven-murray]

This looks good, thanks @bhazelton!