fix: Use a different method to get strings from JNI

[Swatinem]

📜 Description

This uses a different method to get string contents from JNI into native options, and avoids excessive stack allocation.

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps

[codecov-io]

Codecov Report

Merging #1214 (78f95ff) into main (a32a612) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #1214   +/-   ##
=========================================
  Coverage     74.57%   74.57%           
  Complexity     1713     1713           
=========================================
  Files           177      177           
  Lines          6029     6029           
  Branches        600      600           
=========================================
  Hits           4496     4496           
  Misses         1256     1256           
  Partials        277      277           

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[marandaneto]

@Swatinem currently this causes: JNI DETECTED ERROR IN APPLICATION: use of deleted local reference

[marandaneto]

@Swatinem can we close this?

[Swatinem]

I think this would still be interesting to do, as I think the current way is a bit fragile.
More specifically, I think explicitly handling jni references, and cleaning up all the string code would be a good idea.

[codecov-commenter]

Codecov Report

Merging #1214 (3b1459a) into main (72df420) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #1214   +/-   ##
=========================================
  Coverage     76.03%   76.03%           
  Complexity     1954     1954           
=========================================
  Files           192      192           
  Lines          6763     6763           
  Branches        675      675           
=========================================
  Hits           5142     5142           
  Misses         1294     1294           
  Partials        327      327           

---

Continue to review full report at Codecov.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 72df420...3b1459a. Read the comment docs.