Correctly canonicalize skipped package names

Author: uranusjr

src/pip/_internal/commands/list.py

@@ -152,7 +152,7 @@ def run(self, options, args):
 
         skip = set(stdlib_pkgs)
         if options.excludes:
-            skip.update(options.excludes)
+            skip.update(canonicalize_name(n) for n in options.excludes)
 
         packages: "_ProcessedDists" = [
             cast("_DistWithLatestInfo", d)