Allow the use of pyfive.Dataset for interface_type https as well

[valeriupredoi]

Description

Small wiggle that I didn't consider in #300
Needs NCAS-CMS/pyfive#197 for all tests to pass.

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• ☝ Create an issue to discuss what you are going to do

Checklist

• This pull request has a descriptive title and labels
• This pull request has a minimal description (most was discussed in the issue, but a two-liner description is still desirable)
• Unit tests have been added (if codecov test fails)
• Any changed dependencies have been added or removed correctly (if need be)
• If you are working on the documentation, please ensure the current build passes
• All tests pass

[valeriupredoi]

NCAS-CMS/pyfive#197 has now been merged (with many thanks to @davidhassell for the review) so I'll pop a new bugfix release of Pyfive on Monday, merging this now since I tested it with the new pyfive/main and all's OK 🍻