Fixed Novita AI color and added DeepSeek R1 model

[jasonhp]

Summary

Fixed Novita AI color.
Added DeepSeek R1 model.
Fixed Novita AI models' labels.

Resolves #13078

Screenshots

Before	After

Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[crazywoola]

Please fix the lint and link an existing issue. :)

[jasonhp]

Please fix the lint and link an existing issue. :)

Done!

[crazywoola]

Thanks for the PR, but I think we will not have a minor release for v0.15.3, we will release v1.0 very soon. You might also need to submit a PR to this repo https://github.com/langgenius/dify-official-plugins/pulls

[jasonhp]

Thanks for the PR, but I think we will not have a minor release for v0.15.3, we will release v1.0 very soon. You might also need to submit a PR to this repo https://github.com/langgenius/dify-official-plugins/pulls

Done! langgenius/dify-official-plugins#181