[BUG][JAVA] Error in generation of defaults for arrays for specific number types

Created by: robbertvanwaveren

Bug Report Checklist

Have you provided a full/minimal spec to reproduce the issue?
Have you validated the input using an OpenAPI validator (example)?
Have you tested with the latest master to confirm the issue still exists?
Have you searched for related issues/PRs?
What's the actual output vs expected output?
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Description

When an array of default items is specified for a number, the type is infered to BigDecimal but not for the default values.

openapi-generator version

regression since 6.3.0 (probably since #14130 was merged)

OpenAPI declaration file content or url

openapi: 3.0.2
info:
  title: Bug
  version: 0.0.1
paths:
  /test:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                test:
                  type: array
                  items:
                    type: number
                  default:
                    - 0.25
                    - 48
      responses:
        '200':
          description: Ok

Generation Details

openapi-generator-cli generate -i bigdecimal-issue.yaml -g java -o bd-issue

results in TestPostRequest.java

with line 69 being:

this.test = new ArrayList<>(Arrays.asList(0.25, 48));

instead of:

this.test = new ArrayList<>(Arrays.asList(new BigDecimal("0.25"), new BigDecimal("48"));

Steps to reproduce

see above

Related issues/PRs

regression since 6.3.0 (probably since #14130 was merged)

Suggest a fix

See linked PR #14694