Added global region for chatGoogleVertexAI

[chiragjagga]

• Added global region for chatGoogleVertexAI.
• Fixes Google Vertex AI - region "global" #5567

Gemini 3 Pro Spec:
https://docs.cloud.google.com/vertex-ai/generative-ai/docs/models/gemini/3-pro

API:

UI:

[gemini-code-assist]

Summary of Changes

Hello @chiragjagga, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request expands the regional configuration options for chatGoogleVertexAI by adding a 'global' region. This change provides users with greater flexibility in deploying and interacting with Vertex AI services, particularly for scenarios where a specific regional endpoint is not required or a broader scope is desired. The update is reflected in the models.json configuration and resolves a previously identified issue.

Highlights

• Global Region Support: Introduced a 'global' region option for chatGoogleVertexAI configurations, allowing for more flexible deployment and access.
• Issue Resolution: Addresses and fixes issue Google Vertex AI - region "global" #5567, likely related to regional limitations or requirements for chatGoogleVertexAI.

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[gemini-code-assist]

Code Review

This pull request correctly adds the global region for chatGoogleVertexAI, which is required for certain models like Gemini 3 Pro. The change is justified by the linked Google Cloud documentation. I have one suggestion to improve the maintainability and consistency of the configuration file by sorting the regions list. Please see the specific comment for details.

[HenryHengZJ]

Thanks!