add use_region_detection to structurev3 config

paddlex/configs/pipelines/PP-StructureV3.yaml

@@ -7,6 +7,7 @@ use_seal_recognition: True
 use_table_recognition: True
 use_formula_recognition: True
 use_chart_recognition: True
+use_region_detection: True
 pretty_markdown: True
 
 SubModules: