Accidentally deleted Oceananigans compat

[navidcy]

I thought that the compat change was on purpose, in the sense that code didn’t work now with pre-v0.89.2 versions of Oceananigans. Wasn’t it?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (dc3b4aa) 65.84% compared to head (6aa06ea) 65.84%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #153 +/- ## ======================================= Coverage 65.84% 65.84% ======================================= Files 27 27 Lines 1054 1054 ======================================= Hits 694 694 Misses 360 360 ```

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