fix: EasyOCR model downloading

[nikos-livathinos]

Improve the zip handling during the EasyOCR model downloading

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

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

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✅ DCO Check Passed

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[codecov]

Codecov Report

❌ Patch coverage is 44.44444% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
docling/models/stages/ocr/easyocr_model.py	28.57%	5 Missing ⚠️

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