fix: batch observed function eval in plotting, bug fixes

[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.

[AayushSabharwal]

Requires https://github.com/SciML/RecursiveArrayTools.jl/pull/369 and https://github.com/SciML/SymbolicIndexingInterface.jl/pull/70

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.44444% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 41.00%. Comparing base (9e92fc6) to head (668f3f7). Report is 4 commits behind head on master.

Files	Patch %	Lines
src/solutions/ode_solutions.jl	83.33%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #680 +/- ## ========================================== + Coverage 31.74% 41.00% +9.25% ========================================== Files 55 55 Lines 4505 4529 +24 ========================================== + Hits 1430 1857 +427 + Misses 3075 2672 -403 ```

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[AayushSabharwal]

Requires https://github.com/SciML/SymbolicIndexingInterface.jl/pull/72