Don't download original/ and metal/ folders from HF (#1800)

## Motivation

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## Changes

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## Why It Works

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## Test Plan

### Manual Testing
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### Automated Testing
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src/exo/download/download_utils.py

@@ -770,7 +770,10 @@ async def download_shard(
         return target_dir, not_started_progress
     filtered_file_list = list(
         filter_repo_objects(
-            file_list, allow_patterns=allow_patterns, key=lambda x: x.path
+            file_list,
+            allow_patterns=allow_patterns,
+            ignore_patterns=["original/*", "metal/*"],
+            key=lambda x: x.path,
         )
     )