fix: properly implement SII fallbacks for AbstractJumpProblem

[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: 4 lines in your changes are missing coverage. Please review.

Comparison is base (6d3e044) 26.32% compared to head (8fda165) 26.29%. Report is 2 commits behind head on master.

Files	Patch %	Lines
src/problems/problem_interface.jl	0.00%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #628 +/- ## ========================================== - Coverage 26.32% 26.29% -0.03% ========================================== Files 55 55 Lines 4251 4255 +4 ========================================== Hits 1119 1119 - Misses 3132 3136 +4 ```

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