[BUG][typescript-angular] Description is missing in JSDoc with$ref

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?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

openapi-generator version

Version: 7.3.0
Regression: ?

Description

JSDoc description are not generated on $ref properties.

Actual Output

/**
 * Class based documentation
 */
export interface Object1 { 
    property: Object1;
} 

/**
 * Class based documentation
 */
export interface Object2 {
    [k: string]: unknown;
} 

Expected Output

/**
 * Class based documentation
 */
export interface Object1 { 
    /**
     * Property documentation
     */
    property: Object1;
} 

/**
 * Class based documentation
 */
export interface Object2 {
    [k: string]: unknown;
} 

Steps to reproduce

npx openapi-generator-cli generate -g typescript-angular -i ./swagger.json -o ./output`

OpenAPI declaration file content or url

{
  "swagger": "2.0",
  "info": {
    "description": "Backend",
    "version": "1.0.0",
    "title": "API"
  },
  "basePath": "/api",
  "schemes": [
    "http",
    "https"
  ],
  "paths": {
    "/sample": {
      "get": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "application/json"
        ],
        "responses": {
          "200": {
            "description": "successful operation",
            "schema": {
              "$ref": "#/definitions/Object1"
            }
          }
        }
      }
    }
  },
  "definitions": {
    "Object1": {
      "type": "object",
      "description": "Class based documentation",
      "properties": {
        "property": {
          "description": "Property documentation",
          "$ref": "#/definitions/Object2"
        }
      }
    },
    "Object2": {
      "description": "Class based documentation",
      "type": "object",
      "additionalProperties": true
    }
  }
}

Run the shown openapi-generator-cli command with the provided swagger.json and inspect the generated interfaces in ./output. Compare the property JSDoc for Object1 with the expected output, then trace the typescript-angular generator entry point to identify where descriptions for $ref properties are handled. Done means the generated property includes "Property documentation" while preserving the existing class documentation.