Fixes needed for Manifold Projection Semi-Explicit DAEs

[avik-pal]

I am using this to accumulate all the fixes needed for the project, so let's hold off on merging.

• Fixes SteadyState Adjoint for OOP jacobian

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 58.38%. Comparing base (eacd462) to head (d75fefa).

❗ Current head d75fefa differs from pull request most recent head 3eaf6f0. Consider uploading reports for the commit 3eaf6f0 to get more accurate results

Files	Patch %	Lines
src/steadystate_adjoint.jl	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1037      +/-   ##
==========================================
- Coverage   60.77%   58.38%   -2.40%     
==========================================
  Files          19       19              
  Lines        4535     4534       -1     
==========================================
- Hits         2756     2647     -109     
- Misses       1779     1887     +108     

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