[scala] Fix Array[Byte] type for Openapi type string format byte

[chameleon82]

This is follow up #10166 PR to fix generation of Array[Byte] type for the case:

   properties:
        byteStringpProperty:
          type: string
          format: byte

Ref https://swagger.io/docs/specification/data-models/data-types/

The root of cause is defined default as primitive type ByteArray with type mapping from ByteArray to Array[Byte] will be obfuscated to Array[Byte] when toModelName applied.

Proposed solution: do not apply toModelName for explicit language mappings.

Other possible solutions:

• return Array[Byte] on getTypeDeclaration. Has disadvantage as string/byte openapi type is not ArraySchema and wrapper type need to be calculated within internal type. As on lower level that conversion already leads to ByteArray which can be solved with more flexible explicit typeMapping that solution looks not clean.

Related to: 75c0180#diff-15459547d6435da71e0b630591c8e81793affb8c8152b51fbb014b3e2bec4a55R98

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@clasnake (2017/07), @jimschubert (2017/09) ❤️, @shijinkui (2018/01), @ramzimaalej (2018/03), @chameleon82 (2020/03), @Bouillie (2020/04)

[wing328]

@chameleon82 thanks for the PR. Please merge the latest master into your branch when you've time (as some samples have already been updated in the master)

[wing328]

cc @bgong-mdsol as well.

[wing328]

Tested with the following provided in another PR/issue and the result is good (no change to the output):

openapi: 3.0.3
info:
  title: byte-string
  version: '1.0'
paths:
  /state:
    get:
      operationId: getReports
      responses:
        '200':
          description: get Report
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Reports'
components:
  schemas:
    Reports:
      properties:
        name:
          type: string
        traces:
          items:
          $ref: '#/components/schemas/TraceWithScreenshotData'
          type: array
    TraceWithScreenshotData:
      properties:
        screenshot:
          format: byte
          type: string
      type: object

[bgong-mdsol]

👍