To Reproduce Steps to reproduce the behavior:

1. Open an ilab shell on a recent RHEL AI 1.3 release candidate machine
2. Execute python -c "from instructlab.sdg.utils.chunkers import resolve_ocr_options; print(resolve_ocr_options())"
3. It prints a stack trace like below, failing to load the libspatialindex_c library.

(app-root) /$ python -c "from instructlab.sdg.utils.chunkers import resolve_ocr_options; print(resolve_ocr_options())"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/opt/app-root/lib64/python3.11/site-packages/instructlab/sdg/utils/chunkers.py", line 45, in resolve_ocr_options
from docling.models.tesseract_ocr_model import TesseractOcrModel
File "/opt/app-root/lib64/python3.11/site-packages/docling/models/tesseract_ocr_model.py", line 10, in <module>
from docling.models.base_ocr_model import BaseOcrModel
File "/opt/app-root/lib64/python3.11/site-packages/docling/models/base_ocr_model.py", line 10, in <module>
from rtree import index
File "/opt/app-root/lib64/python3.11/site-packages/rtree/{}init{}.py", line 12, in <module>
from .index import Index, Rtree # noqa
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/app-root/lib64/python3.11/site-packages/rtree/index.py", line 11, in <module>
from . import core
File "/opt/app-root/lib64/python3.11/site-packages/rtree/core.py", line 76, in <module>
rt = finder.load()
^^^^^^^^^^^^^
File "/opt/app-root/lib64/python3.11/site-packages/rtree/finder.py", line 130, in load
raise OSError("Could not load libspatialindex_c library")
OSError: Could not load libspatialindex_c library

Expected behavior

• It should show it's loading tesserocr, with output like:

kind='tesserocr' force_full_page_ocr=False bitmap_area_threshold=0.05 lang=['eng'] path=None