prohibit enable and disable function when segment is not completed (#1954)

Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: Joel <iamjoel007@gmail.com>

api/controllers/console/datasets/datasets_segments.py

         if not segment:
             raise NotFound('Segment not found.')
 
+        if segment.status != 'completed':
+            raise NotFound('Segment is not completed, enable or disable function is not allowed')
+
         document_indexing_cache_key = 'document_{}_indexing'.format(segment.document_id)
         cache_result = redis_client.get(document_indexing_cache_key)
         if cache_result is not None:

api/tasks/disable_segment_from_index_task.py

         raise NotFound('Segment not found')
 
     if segment.status != 'completed':
-        return
+        raise NotFound('Segment is not completed , disable action is not allowed.')
 
     indexing_cache_key = 'segment_{}_indexing'.format(segment.id)
 

api/tasks/enable_segment_to_index_task.py

         raise NotFound('Segment not found')
 
     if segment.status != 'completed':
-        return
+        raise NotFound('Segment is not completed, enable action is not allowed.')
 
     indexing_cache_key = 'segment_{}_indexing'.format(segment.id)
 

web/app/components/datasets/documents/detail/completed/SegmentCard.tsx

                         >
                           <Switch
                             size='md'
-                            disabled={archived}
+                            disabled={archived || detail.status !== 'completed'}
                             defaultValue={enabled}
                             onChange={async (val) => {
                               await onChangeSwitch?.(id, val)