Update file path extraction for Gradio 5.x objects

Replaces string conversion with direct access to the .value attribute for Gradio 5.x file objects. Ensures compatibility with newer Gradio versions and improves reliability of file path extraction.

gradio_demo.py

@@ -41,16 +41,16 @@ def get_file_path(file_obj) -> str:
     if isinstance(file_obj, str):
         return file_obj
 
-    # Gradio 5.x NamedString: str(obj) gives the path
-    # Check if converting to string gives a valid path
-    str_val = str(file_obj)
-    if str_val and len(str_val) > 5 and ('/' in str_val or '\\' in str_val):
-        return str_val
+    # Gradio 5.x namespace object: path is in .value attribute
+    if hasattr(file_obj, 'value'):
+        value = file_obj.value
+        if isinstance(value, str) and len(value) > 5:
+            return value
 
     # Gradio 3.x/4.x: object with .name attribute containing the path
     if hasattr(file_obj, 'name'):
         name_val = file_obj.name
-        if isinstance(name_val, str) and len(name_val) > 5:
+        if isinstance(name_val, str) and len(name_val) > 5 and '/' in name_val:
             return name_val
 
     # Try .path attribute