Fix replacement_directory to resolve via test data resolver

class: Directory + path: in CWL-style jobs only joined path with
job_dir — no fallback to test-data/. Broke directory_index_1 after
migrating fixtures to class/path form. Match upload_file/upload_tar
by using abs_path_or_uri, which falls back to resolve_data.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: jmchilton

lib/galaxy/tool_util/cwl/util.py

@@ -305,8 +305,7 @@ def replacement_directory(value: Dict[str, Any]) -> Dict[str, Any]:
         file_path = value.get("location", None) or value.get("path", None)
         if file_path is None:
             return value
-        if not os.path.isabs(file_path):
-            file_path = os.path.join(test_data_directory, file_path)
+        file_path = abs_path_or_uri(file_path, test_data_directory, resolve_data=resolve_data)
 
         file_type = value.get("filetype", None) or value.get("format", None) or "directory"