fix: Fall back to Spark for MakeDecimal with unsupported input type

[andygrove]

Which issue does this PR close?

Closes https://github.com/apache/datafusion-comet/issues/2813

Rationale for this change

What changes are included in this PR?

How are these changes tested?

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 59.14%. Comparing base (f09f8af) to head (726ca21). :warning: Report is 736 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2815      +/-   ##
============================================
+ Coverage     56.12%   59.14%   +3.02%     
- Complexity      976     1471     +495     
============================================
  Files           119      167      +48     
  Lines         11743    15238    +3495     
  Branches       2251     2514     +263     
============================================
+ Hits           6591     9013    +2422     
- Misses         4012     4942     +930     
- Partials       1140     1283     +143     

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[comphead]

are we waiting to address any feedback on this PR?

[andygrove]

are we waiting to address any feedback on this PR?

I think I addressed all of the feedback from @martin-g

[andygrove]

Thanks @andygrove and @martin-g for the review.

I feel this PR is good as it has the consistent issue before the PR and after PR it is fixed, probably remaining feedback we can address in following PRs if you guys okay with that

Sounds good to me. Thanks @comphead and @martin-g.