Update PTQ ignored scope for hrnet 18 mod2 (#2449)

Update ptq ignored scope for hrnet 18  mod2

Author: sovrasov

src/otx/algorithms/segmentation/configs/ocr_lite_hrnet_18_mod2/ptq_optimization_config.py

@@ -23,6 +23,7 @@
 preset = QuantizationPreset.MIXED
 
 ignored_scope = IgnoredScope(
+    patterns=["/backbone/*"],
     names=[
         "/backbone/stage0/stage0.0/layers/layers.0/cross_resolution_weighting/Mul",
         "/backbone/stage0/stage0.0/layers/layers.0/cross_resolution_weighting/Mul_1",
@@ -102,5 +103,5 @@
         "/aggregator/Add_1",
         "/aggregator/Add_2",
         "/backbone/stage2/stage2.1/Add",
-    ]
+    ],
 )