Expand Vertex AI region config to include all available regions in GCP Vertex AI

[shubhamgupta731]

Related GitHub Issue

Closes: #5555

Description

This PR updates the Vertex AI provider configuration to include all currently supported regions in the VERTEX_REGIONS array, as defined in packages/types/src/providers/vertex.ts. This ensures users can select any available region for model deployment and compliance, including but not limited to asia-east1, us-central1, europe-west1, and others.

Key implementation details:

• The region dropdown in the Vertex AI provider settings now reflects the complete set of supported regions.
• The region list is sourced from a single configuration array to avoid hardcoding and ensure maintainability.
• All code follows existing region handling patterns.

Test Procedure

• Verified all regions appear in the region dropdown in the Vertex AI provider settings.
• Ran all tests in Vertex.spec.tsx and confirmed they pass.
• Checked for lint and style compliance.

Reviewers can reproduce these tests by:

1. Opening the Vertex AI provider settings and confirming all regions are present in the dropdown.
2. Running Vertex.spec.tsx and verifying all tests pass.
3. Running lint and style checks to confirm compliance.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (if applicable).
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Screenshots / Videos

Documentation Updates

• No documentation updates are required.

Additional Notes

Get in Touch

shubhamgupta731

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Important

Adds asia-east1 to VERTEX_REGIONS and introduces tests to ensure correct region handling in Vertex AI.

• Behavior:
  • Adds asia-east1 to VERTEX_REGIONS in vertex.ts to expand supported regions.
  • Ensures all regions are selectable in the Vertex AI provider settings.
• Testing:
  • New test file Vertex.spec.tsx verifies VERTEX_REGIONS includes 'global' and 'asia-east1' exactly once.
  • Confirms all expected regions are present in VERTEX_REGIONS.

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[daniel-lxs]

Thank you @shubhamgupta731!