fix: find paragraphs in elements with images in docx

[Manuel030]

Some text is not found when using the MsWordDocumentBackend. An example docx file where this happens is attached: paragraph_in_image.docx

The pragmatic solution is to attempt to add text elements even when a drawing expression is found.

Checklist:

• Documentation has been updated, if necessary.
• Examples have been added, if necessary.
• Tests have been added, if necessary.

[mergify]

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[PeterStaar-IBM]

@Manuel030 Thank you for the PR! Could you add this document as a test?

[Manuel030]

@PeterStaar-IBM Sure

[maxmnemonic]

I see this solution generates empty text paragraphs, perhaps every time we encounter drawing.
@Manuel030, please add check for an empty text and ignore adding such paragraphs.

[Manuel030]

I see the comment on line 312:

 # for now retain empty paragraphs for backwards compatibility:

Hence, I would leave it as is to not introduce another special case in def _get_paragraph_elements(self, paragraph: Paragraph)

[cau-git]

@Manuel030 @maxmnemonic There is apparently a newer PR with the same goal here: #1610 which has the proper condition to not produce empty text paragraphs.