fix: Fixes for wordx

[maxmnemonic]

• Fixes for referencing drawing blip in wordx
• Added safety try-except when trying to load pillow image from a docx blob.
• Added explicit dependency on lxml.

Issue resolved by this Pull Request: Resolves #417 Resolves #410

Checklist:

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

[mergify[bot]]

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