🪨 fix: Minor AWS Bedrock/Misc. Improvements

[danny-avila]

Summary

Closes #3959

• Added a new EditTextPart component to handle editing of text content parts.
• Updated the ContentParts component to support editing of individual parts.
• Modified the messages API route to handle updates to specific content parts.
• Added new types and mutation hooks for updating message content.
• Refactored the EditMessage component to use react-hook-form for better form handling.
• Fix useCopyToClipboard & Conversation Exports for new content block structure
• Improved theming and styling for "Minimal" icons
• Fixed issues with the useVoicesQuery and useCustomConfigSpeechQuery to prevent unnecessary requests.
• Enhanced error handling and type safety throughout the changes.
• Add artifacts feature for AWS Bedrock

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• I have made pertinent documentation changes
• My changes do not introduce new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes