chore: add 10 return type hints in test_named_entity_extractor.py

[travellingsoldier85]

Summary

Added return type hints to functions in e2e/pipelines/test_named_entity_extractor.py.

Changes

• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> None to function
• Add return type hint -> list to function
• Add return type hint -> list to function
• Add return type hint -> list to function

Type of Change

• Code quality improvement (type hints)
• Bug fix
• New feature

Adding type hints improves IDE support, catches bugs earlier, and makes the codebase more maintainable.
No functional changes — only type annotations added.

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