Fix missing case for spatial-only attention bias in layoutlmv3_eager_attention_forward

Author: jackiehimel

src/transformers/models/layoutlmv3/modeling_layoutlmv3.py

@@ -254,6 +254,8 @@ def layoutlmv3_eager_attention_forward(
         attention_scores = attention_scores + (rel_pos + rel_2d_pos) / math.sqrt(query.size(-1))
     elif module.has_relative_attention_bias and rel_pos is not None:
         attention_scores = attention_scores + rel_pos / math.sqrt(query.size(-1))
+    elif module.has_spatial_attention_bias and rel_2d_pos is not None:
+        attention_scores = attention_scores + rel_2d_pos / math.sqrt(query.size(-1))
 
     if attention_mask is not None:
         # Apply the attention mask