attempted to fix list_remote_datasets slowdown

[balisujohn]

Description

This PR attempts to fix the slowdown to list_remote_datasets introduced in 0.4.0.

0.4.1 average runtime: 3.2189864999999998
0.3.1 average runtime: average runtime: 0.2429087
patched version: average runtime: 0.7913758999999999

n=20

I will also re-run this profiling with n=100 prior to marking this ready for review, since the Google bucket response times seem to add a lot of variance. (I redid n=20 and results seem to replicate well enough I'm convinced this patch is worthwhile)

Type of Change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have run pytest -v and no errors are present.
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I solved any possible warnings that pytest -v has generated that are related to my code to the best of my knowledge.
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes