fix: propagate document limits to converter

[dolfim-ibm]

We have a small bug which is not propagating the document limits max_num_pages and max_file_size to the actual converter.

Checklist:

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

[mergify]

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• title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\(.+\))?:

[PeterStaar-IBM]

good catch!