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]

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 ⚠️

Additional details and impacted files

@@            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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