Fix Gallery style usage for Gradio v5

ui/layout.py

@@ -43,7 +43,7 @@ def build_ui(event_handler_function):
 
             # New Gallery tab to display generated images
             with gr.TabItem("Gallery", id=5):
-                gallery = gr.Gallery(label="Generated Images", show_label=False).style(grid=[3], height="auto")
+                gallery = gr.Gallery(label="Generated Images", show_label=False, columns=3, height="auto")
                 ui_components["gallery"] = gallery
 
             ui_components["tabs"] = tabs