[Bug]: Parameters array format expects "default" to be string

[WhiteRabbit-Code]

What happened?

DAB expects the default parameter in the new parameters array format to be of type string.
Types other than string fail DAB to start, besides documentation states datatype "any" and the configuration-file validates successful against the JSON-Schema:

{
  "$schema": "https://github.com/Azure/data-api-builder/releases/download/v2.0.8/dab.draft.schema.json",
  ...
  "entities": {
    "test": {
      "source": {
        "object": "dbo.sp_Test",
        "type": "stored-procedure",
        "parameters": [
          {
            "name": "Id",
            "default": 0
          },
          {
            "name": "InitValue",
            "value": 0
          },
          {
            "name": "Name",
            "value": "test"
          }
        ]
      },
      "rest": {
        "enabled": true,
        "methods": [
          "post"
        ]
      },
      ...

Version

2.0.8

What database are you using?

Azure SQL

What hosting model are you using?

AppService

Which API approach are you accessing DAB through?

REST

Relevant log output

2026-06-10T14:12:33.1708776Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:33.1708897Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:33.1708941Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:33.1709014Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:33.1709064Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:33.1709103Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:33.1709143Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:33.1709176Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:33.1771964Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:34.7860448Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:34.7861245Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:35.2621692Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:35.2624784Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.
2026-06-10T14:12:35.5071225Z fail: Azure.DataApiBuilder.Config.FileSystemRuntimeConfigLoader[0]
2026-06-10T14:12:35.5072024Z       Deserialization of the configuration file failed. The JSON value could not be converted to System.String. Path: $.parameters[0].default | LineNumber: 6 | BytePositionInLine: 24.

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