Fix MaskRCNN SwinT NNCF Accuracy Drop (#3685)

fix swin-t nncf kinda

Author: eugene123tw

src/otx/algo/instance_segmentation/maskrcnn.py

@@ -820,3 +820,19 @@ def _build_model(self, num_classes: int) -> MaskRCNN:
             train_cfg=train_cfg,
             test_cfg=test_cfg,
         )
+
+    @property
+    def _optimization_config(self) -> dict[str, Any]:
+        """PTQ config for MaskRCNN-SwinT."""
+        return {
+            "ignored_scope": {
+                "types": [
+                    "Add",
+                    "MVN",
+                    "Divide",
+                    "Multiply",
+                ],
+                "validate": False,
+            },
+            "preset": "mixed",
+        }