bug/poor partition output from `ocr_only` strategies with TIFF image file

[yuming-long]

Describe the bug
on ocr_only partition with TIFF image layout-parser-paper-combined.tiff link, partition output is poor compared to hi_res and only extracted text from first page (out of total 2 pages)

To Reproduce

curl -X 'POST'  'https://api.unstructured.io/general/v0/general'   -H 'accept: application/json'   -H 'Content-Type: multipart/form-data'  -F 'files=@layout-parser-paper-combined.tiff' -H 'unstructured-api-key: <api_key>' -F 'strategy=ocr_only' | jq -C . | less -R