🐛 Fix ruff check TC003 Move standard library import collections.abc.Callable into a type-checking block

Author: shaneahmed

tests/engines/test_semantic_segmentor.py

@@ -5,8 +5,8 @@
 import json
 import sqlite3
 import tempfile
-from collections.abc import Callable
 from pathlib import Path
+from typing import TYPE_CHECKING
 from unittest import mock
 
 import dask.array as da
@@ -27,6 +27,9 @@
 from tiatoolbox.utils.misc import imread
 from tiatoolbox.wsicore import WSIReader
 
+if TYPE_CHECKING:
+    from collections.abc import Callable
+
 device = "cuda" if toolbox_env.has_gpu() else "cpu"