Create override for array schema default value when using the spring …

Administrator
2023-03-19T17:03:12Z

*Created by: jason-cohen*

…codegen.

### PR checklist

- [x] Read the [contribution guidelines](https://github.com/openapitools/openapi-generator/blob/master/CONTRIBUTING.md).
- [ ] Ran the shell script under `./bin/` to update Petstore sample so that CIs can verify the change. (For instance, only need to run `./bin/{LANG}-petstore.sh` and `./bin/security/{LANG}-petstore.sh` if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in `.\bin\windows\`.
- [x] Filed the PR against the [correct branch](https://github.com/OpenAPITools/openapi-generator/wiki/Git-Branches): `master`, `3.3.x`, `4.0.x`. Default: `master`.
- [x] @bbdouglas @JFCote @sreeshas @jfiala @lukoyanov @cbornet @jeff9finger

### Description of the PR

Fix #890

### Note

There is an issue with the swagger-parser (https://github.com/swagger-api/swagger-parser/issues/814) where an empty string for the default field is parsed as null. This fix won't achieve the desired effect until that issue is resolved and released.