fix: make remake_buffer work for array symbolics

[AayushSabharwal]

Close SciML/ModelingToolkit.jl#2713

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 80.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 85.79%. Comparing base (71408bb) to head (f5e96c6).

Files	Patch %	Lines
src/remake.jl	80.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #79      +/-   ##
==========================================
- Coverage   86.15%   85.79%   -0.37%     
==========================================
  Files          11       11              
  Lines         513      521       +8     
==========================================
+ Hits          442      447       +5     
- Misses         71       74       +3     

Flag	Coverage Δ
docs	28.07% <0.00%> (-0.45%)	⬇️

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