chore: Merging from main branch

[Prekshith-Microsoft]

This pull request updates the default Azure OpenAI Vision model configuration across the codebase and infrastructure from gpt-4 to gpt-4.1, and updates the default model version. It also improves documentation for resource deletion when redundancy is enabled and makes minor updates to code ownership. The changes ensure consistency in model naming and versioning for deployments and local configuration, and add guidance for handling Log Analytics workspace replication.

Azure OpenAI Vision Model Updates

• Changed the default Azure OpenAI Vision model and version from gpt-4 / turbo-2024-04-09 to gpt-4.1 / 2025-04-14 in infrastructure parameters (infra/main.bicep, infra/main.json) and environment configuration (code/backend/batch/utilities/helpers/env_helper.py). [1] [2] [3]
• Updated documentation and examples to reflect the new model name and version (docs/model_configuration.md).
• Updated tests and usage to use the new model name (code/tests/utilities/helpers/test_push_embedder.py).

Infrastructure and Deployment

• Simplified OpenAI deployment configuration to only use defaultOpenAiDeployments, removing conditional logic for advanced image processing deployments (infra/main.bicep, infra/main.json). [1] [2] [3]
• Updated Bicep and generated JSON template metadata to newer versions throughout the infrastructure files (infra/main.json). [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16]

Documentation Improvements

• Added a new guide for disabling Log Analytics workspace replication before resource deletion, referenced from the local deployment instructions (docs/LogAnalyticsReplicationDisable.md, docs/LOCAL_DEPLOYMENT.md). [1] [2]

Repository Ownership

• Added two new default code owners to .github/CODEOWNERS for broader team coverage.## Purpose

• ...

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information