Feat: Pipeline Docx file supports Markdown output (#10439)

### What problem does this PR solve?

Pipeline Docx file supports Markdown output.

<img width="1242" height="755" alt="image"
src="https://github.com/user-attachments/assets/63cca75b-20b9-4a90-a01c-c0c2fccf1f2a"
/>

<img width="1227" height="717" alt="image"
src="https://github.com/user-attachments/assets/0dcb94b2-7ba0-48d5-9231-dc6e5c4b4192"
/>


### Type of change

- [x] New Feature (non-breaking change which adds functionality)

pyproject.toml

@@ -133,6 +133,8 @@ dependencies = [
     "litellm>=1.74.15.post1",
     "flask-mail>=0.10.0",
     "lark>=1.2.2",
+    "mammoth>=1.11.0",
+    "markdownify>=1.2.0",
 ]
 
 [project.optional-dependencies]