fix(model_runtime): add vision to Amazon Nova Lite and Pro

[mazyu36]

Summary

Amazon Nova Lite and Pro support Image and Video.

Ref: https://docs.aws.amazon.com/nova/latest/userguide/what-is-nova.html

Tip

Close issue syntax: Fixes #<issue number> or Resolves #<issue number>, see documentation for more details.

Screenshots

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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]

cc @laipz8200 @Yeuoly