fix(udf): support struct[] type in struct

[wangrunji0408]

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What's changed and what's your intention?

This PR fixes the bug that UDF doesn't support struct[] type in struct.

On RisingWave side:

• Fix the datatype comparison with field name ignored.
• Support casting to arrow for struct[] arrays.

On Python side:

• Fix parsing nested struct type. e.g. struct<struct<int>>

On Java side:

• Support data conversion between Arrow vector and user-defined Java class via reflection.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

[codecov]

Codecov Report

Attention: 26 lines in your changes are missing coverage. Please review.

Comparison is base (83e9586) 68.28% compared to head (b112749) 68.25%.
Report is 3 commits behind head on main.

Files	Patch %	Lines
src/common/src/array/arrow.rs	54.28%	16 Missing ⚠️
src/common/src/array/list_array.rs	0.00%	3 Missing ⚠️
src/expr/core/src/expr/expr_udf.rs	0.00%	3 Missing ⚠️
src/expr/core/src/table_function/user_defined.rs	0.00%	3 Missing ⚠️
src/common/src/types/mod.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13689      +/-   ##
==========================================
- Coverage   68.28%   68.25%   -0.03%     
==========================================
  Files        1523     1523              
  Lines      261481   261505      +24     
==========================================
- Hits       178555   178493      -62     
- Misses      82926    83012      +86     

Flag	Coverage Δ
rust	68.25% <42.22%> (-0.03%)	⬇️

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[liurenjie1024]

LGTM, thanks!

[xxchan]

Why to change this 🤣

[wangrunji0408]

Looks like it's postgres' default name.

postgres=# select (row(1, 2)).*;
 f1 | f2 
----+----
  1 |  2