[BUG][Java][Spring][SpringBoot] optional array with 'minItems' set generates to uninitialized list

[kingofdisasterr]

fixes #22784

@cachescrubber @welshm @MelleD @atextor @manedev79 @javisst @borsch @banlevente @Zomzog @martin-mfg

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Summary by cubic

Fixes #22784 by generating optional arrays with minItems > 0 in Java/Spring as nullable (default null) instead of initialized empty lists. This avoids invalid defaults and aligns with validation rules.

• Bug Fixes
  • Updated AbstractJavaCodegen.toDefaultValue to return null for optional arrays with minItems > 0.
  • Added test to ensure FooBarRequestDto.barList is nullable and not initialized.
  • Included OpenAPI sample (issue_22784.yaml) covering this scenario.

^{Written for commit 4949f28. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 3 files