fix: fixed code quality issues

[Kanchan-Microsoft]

Purpose

This pull request includes a variety of cleanup, bugfixes, and code simplification changes across the backend Python code, frontend React application, and deployment/documentation files. The main focus is on removing unused code, fixing minor bugs, clarifying documentation, and improving maintainability.

Backend Python code improvements:

• Changed parse_polygon field validator methods in Word, Line, and Paragraph classes to use self instead of cls for correct method signatures.
• Updated save_to_persistent_storage in pipeline message and status classes to accept account_url and container_name parameters, clarifying intended usage and removing unimplemented pass statements.
• Fixed parameter name in download_file method from file_path to download_path to match the expected argument in StorageBlobHelper.
• Removed an unused internal helper function (_find_process_result) from queue_handler_base.py for clarity.
• Removed unnecessary variable assignment in remote_module_loader.py.
• Updated placeholder dependency functions in FastAPI to raise exceptions instead of using pass, making error handling explicit.

Frontend React code cleanup and simplification:

• Removed unused imports and variables across multiple components, including Header.tsx, UploadFilesModal.tsx, ProcessQueueGrid.tsx, ProcessSteps.tsx, and others, to reduce bundle size and improve readability.
• Removed or updated unnecessary state and props, such as removing unused fileType and useDispatch in process queue and process steps components.
• Fixed minor bugs, such as correcting function formatting and removing references to deleted variables.

Documentation and deployment script updates:

• Removed obsolete "Known Issues" and workaround section from DeploymentGuide.md as Azure Portal issues have been resolved.
• Fixed a small typo in the deployment guide tip.
• Removed the SecurityControl tag from the Azure deployment workflow as it is no longer needed.

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• ...

Other Information