Updates multimodal examples to place text content before image content, which prevents request failures. Changes: - Reordered content array in all SDK examples to have text first, then image - Fixed TypeScript mediaType casing (media_type -> mediaType) - Applied to both URL-based and base64-encoded image examples 🐾 Generated with [Letta Code](https://letta.com) Co-authored-by: Letta <noreply@letta.com>