fix index error left join (#833)

* fix index cannot be reshaped

* fix index problem left join

src/spatialdata/_core/query/relational_query.py

@@ -484,7 +484,7 @@ def _left_join_spatialelement_table(
         # if nan were present, the dtype would have been changed to float
         if joined_indices.dtype == float:
             joined_indices = joined_indices.astype(int)
-    joined_table = table[joined_indices, :].copy() if joined_indices is not None else None
+    joined_table = table[joined_indices.tolist(), :].copy() if joined_indices is not None else None
     _inplace_fix_subset_categorical_obs(subset_adata=joined_table, original_adata=table)
 
     return element_dict, joined_table