chore(provider/gateway): update gateway model settings files (#12711)

<!--
Welcome to contributing to AI SDK! We're excited to see your changes.

We suggest you read the following contributing guide we've created
before submitting:

https://github.com/vercel/ai/blob/main/CONTRIBUTING.md
-->

## Background

<!-- Why was this change necessary? -->

enabling video models 

## Summary

<!-- What did you change? -->

added video models to settings file

## Manual Verification

<!--
For features & bugfixes.
Please explain how you *manually* verified that the change works
end-to-end as expected (excluding automated tests).
Remove the section if it's not needed (e.g. for docs).
-->

n/a

## Checklist

<!--
Do not edit this list. Leave items unchecked that don't apply. If you
need to track subtasks, create a new "## Tasks" section

Please check if the PR fulfills the following requirements:
-->

- [ ] Tests have been added / updated (for bug fixes / features)
- [ ] Documentation has been added / updated (for bug fixes / features)
- [x] A _patch_ changeset for relevant packages has been added (for bug
fixes / features - run `pnpm changeset` in the project root)
- [x] I have reviewed this pull request (self-review)

## Future Work

<!--
Feel free to mention things not covered by this PR that can be done in
future PRs.
Remove the section if it's not needed.
 -->

## Related Issues

<!--
List related issues here, e.g. "Fixes #1234".
Remove the section if it's not needed.
-->

Author: sylviezhang37

.changeset/happy-boxes-lick.md

@@ -0,0 +1,5 @@
+---
+'@ai-sdk/gateway': patch
+---
+
+chore(provider/gateway): update gateway model settings files

packages/gateway/src/gateway-language-model-settings.ts

@@ -54,9 +54,9 @@ export type GatewayModelId =
   | 'google/gemini-2.5-flash-preview-09-2025'
   | 'google/gemini-2.5-pro'
   | 'google/gemini-3-flash'
-  | 'google/gemini-3.1-pro-preview'
   | 'google/gemini-3-pro-image'
   | 'google/gemini-3-pro-preview'
+  | 'google/gemini-3.1-pro-preview'
   | 'inception/mercury-coder-small'
   | 'kwaipilot/kat-coder-pro-v1'
   | 'meituan/longcat-flash-chat'

packages/gateway/src/gateway-video-model-settings.ts

@@ -1 +1,19 @@
-export type GatewayVideoModelId = 'google/veo-3.1-generate-001' | (string & {});
+export type GatewayVideoModelId =
+  | 'alibaba/wan-v2.5-t2v-preview'
+  | 'alibaba/wan-v2.6-i2v'
+  | 'alibaba/wan-v2.6-i2v-flash'
+  | 'alibaba/wan-v2.6-r2v'
+  | 'alibaba/wan-v2.6-r2v-flash'
+  | 'alibaba/wan-v2.6-t2v'
+  | 'google/veo-3.0-fast-generate-001'
+  | 'google/veo-3.0-generate-001'
+  | 'google/veo-3.1-fast-generate-001'
+  | 'google/veo-3.1-generate-001'
+  | 'klingai/kling-v2.5-turbo-i2v'
+  | 'klingai/kling-v2.5-turbo-t2v'
+  | 'klingai/kling-v2.6-i2v'
+  | 'klingai/kling-v2.6-t2v'
+  | 'klingai/kling-v3.0-i2v'
+  | 'klingai/kling-v3.0-t2v'
+  | 'xai/grok-imagine-video'
+  | (string & {});