test: fix several downstream test failures

[AayushSabharwal]

Checklist

• [ ] Appropriate tests were added
• [ ] Any code changes were done in a way that does not break public API
• [ ] All documentation related to code changes were updated
• [ ] The new code follows the contributor guidelines, in particular the SciML Style Guide and COLPRAC.
• [ ] Any new documentation only uses public API

Additional context

Add any other context about the problem here.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 33.33333% with 20 lines in your changes missing coverage. Please review.

Project coverage is 41.39%. Comparing base (6b220f9) to head (5112e27).

Files	Patch %	Lines
ext/SciMLBaseZygoteExt.jl	33.33%	20 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #706 +/- ## ========================================== + Coverage 31.47% 41.39% +9.92% ========================================== Files 55 55 Lines 4588 4626 +38 ========================================== + Hits 1444 1915 +471 + Misses 3144 2711 -433 ```

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