feat: sort ScMap entries by key in Scv.toMap following Soroban runtime ordering

[overcat]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 93.01075% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.41%. Comparing base (64abf03) to head (ec0ad0c).

Files with missing lines	Patch %	Lines
...main/java/org/stellar/sdk/scval/ScvComparator.java	93.47%	7 Missing and 5 partials ⚠️
src/main/java/org/stellar/sdk/scval/Scv.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #766      +/-   ##
============================================
+ Coverage     81.01%   81.41%   +0.39%     
- Complexity     1417     1478      +61     
============================================
  Files           218      219       +1     
  Lines          5400     5586     +186     
  Branches        540      570      +30     
============================================
+ Hits           4375     4548     +173     
- Misses          721      729       +8     
- Partials        304      309       +5     

Files with missing lines	Coverage Δ
src/main/java/org/stellar/sdk/scval/ScvMap.java	70.58% <100.00%> (+1.83%)	⬆️
src/main/java/org/stellar/sdk/scval/Scv.java	95.91% <0.00%> (-2.00%)	⬇️
...main/java/org/stellar/sdk/scval/ScvComparator.java	93.47% <93.47%> (ø)

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