Merge pull request #17899 from mvdbeek/fix_basic_tool_util

[24.0] Fix conditional Image imports

lib/galaxy/tool_util/verify/__init__.py

@@ -31,7 +31,7 @@ except ImportError:
 try:
     from PIL import Image
 except ImportError:
-    pass
+    Image = None  # type: ignore[assignment]
 
 from galaxy.tool_util.parser.util import (
     DEFAULT_DELTA,

lib/galaxy/util/image_util.py

@@ -10,7 +10,7 @@ from typing import (
 try:
     from PIL import Image
 except ImportError:
-    PIL = None
+    Image = None  # type: ignore[assignment]
 
 log = logging.getLogger(__name__)