perf: Stop passing Java config map into native createPlan

[andygrove]

Which issue does this PR close?

Part of #1098

Rationale for this change

We were constructing a Java map containing 5 configs and passing that into native and then extracting those configs. This is expensive compared to just passing the 5 configs as parameters.

This config mechanism also supported passing arbitrary DataFusion configs into the native context but I am not aware of anyone using this feature, and perhaps there is a cleaner way to do this if we want to add it back.

What changes are included in this PR?

Just some refactoring to make createPlan a little more efficient.

How are these changes tested?

Existing tests.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.28%. Comparing base (b74bfe4) to head (3ea852f).
Report is 6 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1101      +/-   ##
============================================
- Coverage     34.33%   34.28%   -0.06%     
+ Complexity      898      890       -8     
============================================
  Files           115      115              
  Lines         42986    42922      -64     
  Branches       9369     9378       +9     
============================================
- Hits          14761    14717      -44     
+ Misses        25361    25327      -34     
- Partials       2864     2878      +14     

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