[json] JSON Schema anyOf error reporting is misleading

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version:
• OS Version:

Steps to Reproduce:

1. Save the following as repo_schema.json

{
  "$schema": "https://json-schema.org/draft-07/schema",
  "$id": "repo_schema.json",
  "type": "object",
  "properties": {
    "$schema": {
          "type": "string"
        },
    "merge_types": {
      "type": "object",
      "patternProperties": {
        "^.*$": {
          "properties": {
            "allow_squash": {
              "type": "boolean"
            },
            "allow_rebase_and_fast_forward": {
              "type": "boolean"
            },
            "allow_basic_no_fast_forward": {
              "type": "boolean"
            },
            "allow_rebase_with_merge": {
              "type": "boolean"
            }
          },
          "additionalProperties": false,
          "required": [
            "allow_squash",
            "allow_rebase_and_fast_forward",
            "allow_basic_no_fast_forward",
            "allow_rebase_with_merge"
          ],
          "anyOf": [
            {
              "properties": {
                "allow_squash": {
                  "const": true,
                  "description": "At least one merge type must be enabled."
                }
              }
            },
            {
              "properties": {
                "allow_rebase_and_fast_forward": {
                  "const": true,
                  "description": "At least one merge type must be enabled."
                }
              }
            },
            {
              "properties": {
                "allow_basic_no_fast_forward": {
                  "const": true,
                  "description": "At least one merge type must be enabled."
                }
              }
            },
            {
              "properties": {
                "allow_rebase_with_merge": {
                  "const": true,
                  "description": "At least one merge type must be enabled."
                }
              }
            }
          ]
        }
      },
      "additionalProperties": false
    }
  },
  "required": [],
  "additionalProperties": false
}

2. Save the following as test.json

{
    "$schema": "repo_schema.json",
    "merge_types": {
        "main": {
            "allow_squash": false,
            "allow_rebase_and_fast_forward": false,
            "allow_basic_no_fast_forward": false,
            "allow_rebase_with_merge": false
        }
    }
}

3. Ensure that the setting json.validate.enable=true
4. You'll get a single yellow squiggly like this:

This implies that the issue is with the first property, but in reality changing any of them to true makes the squiggly go away (which is correct).

The squiggly line should appear on all of the properties, since it's not just the first property that's failing to validate. Indeed other validators such as https://www.jsonschemavalidator.net/ do generate an error for each property: