fix: skip comment blocks in DOCXToDocument (#8764)

* fix bug #8759

* Apply suggestions from code review

* release note

---------

Co-authored-by: Stefano Fiorucci <stefanofiorucci@gmail.com>

haystack/components/converters/docx.py

@@ -23,6 +23,7 @@ with LazyImport("Run 'pip install python-docx'") as docx_import:
     from docx.document import Document as DocxDocument
     from docx.table import Table
     from docx.text.paragraph import Paragraph
+    from lxml.etree import _Comment
 
 
 @dataclass
@@ -210,6 +211,8 @@ class DOCXToDocument:
         """
         elements = []
         for element in document.element.body:
+            if isinstance(element, _Comment):
+                continue
             if element.tag.endswith("p"):
                 paragraph = Paragraph(element, document)
                 if paragraph.contains_page_break:

releasenotes/notes/docx-skip-comment-blocks-d3a555d0324788c7.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    The DOCXToDocument component now skips comment blocks in DOCX files that previously caused errors.