Use gr.File instead of gr.Files for a better experience on mobile phones

Hello! There is a bug in gradio where the `file_types` parameter is not working with `gr.Files`. See (https://github.com/gradio-app/gradio/issues/7137). While I fix it in gradio, this PR should fix it in your demo. `gr.File(file_count="multiple")` is the same as `gr.Files`.

app.py

@@ -198,9 +198,10 @@ with gr.Blocks(css=css) as demo:
     # )
     with gr.Row():
         with gr.Column():
-            files = gr.Files(
+            files = gr.File(
                         label="Drag (Select) 1 or more photos of your face",
-                        file_types=["image"]
+                        file_types=["image"],
+                        file_count="multiple"
                     )
             uploaded_files = gr.Gallery(label="Your images", visible=False, columns=5, rows=1, height=200)
             with gr.Column(visible=False) as clear_button: