chore: replace importlib with loader.load_unicode of Xblock

image_explorer/image_explorer.py

@@ -30,7 +30,6 @@
 import textwrap
 from io import StringIO
 from urllib.parse import urljoin
-import importlib.resources
 
 from django.conf import settings
 from lxml import etree, html
@@ -465,5 +464,4 @@ def workbench_scenarios():
 
     def resource_string(self, path):
         """Handy helper for getting resources from our kit."""
-        data = importlib.resources.files(__package__).joinpath(path)
-        return data.read_text(encoding="utf-8")
+        return loader.load_unicode(path)