fix(ui): not all models comes from gallery

[mudler]

Description

This pull request includes changes to the core/http/views/chat.html file to improve the handling of gallery configurations in the chat interface. The most important changes focus on adding conditional checks for the presence of gallery configurations before attempting to display gallery icons.

Improvements to gallery configuration handling:

• core/http/views/chat.html: Added a conditional check for the presence of $galleryConfig before attempting to display the gallery icon in the chat header.
• core/http/views/chat.html: Added a conditional check for the presence of $galleryConfig before attempting to display the gallery icon in chat messages.

Notes for Reviewers

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