refactor: ensure numpyro stores posteriors and priors as list[xr.Dataset] and xr.Dataset like pymc#62

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arviz-devs:mainarviz-devs/simuk:mainfrom

Cab14bacc:refactor/standardize_numpyro_saved_posteriorsCab14bacc/simuk:refactor/standardize_numpyro_saved_posteriorsCopy head branch name to clipboard