When filtering for allowed packages allow both upper case and lower c…

…ase packages (#5808)

Latest pillow releases have changed from 'Pillow'->'pillow'
Please refer: https://pypi.org/project/pillow/11.0.0/#files vs
https://pypi.org/project/pillow/10.0.0/#files
hence we should allow both conventions for now.

In Prod for example: https://download.pytorch.org/whl/pillow/ 

As per: https://peps.python.org/pep-0566/ :
All transformed keys should be reduced to lower case. Hyphens should be
replaced with underscores, but otherwise should retain all other
characters;

s3_management/manage.py

@@ -181,6 +181,8 @@
     "wheel"
 }
 
+PACKAGE_ALLOW_LIST=[x.lower() for x in PACKAGE_ALLOW_LIST]
+
 # Should match torch-2.0.0.dev20221221+cu118-cp310-cp310-linux_x86_64.whl as:
 # Group 1: torch-2.0.0.dev
 # Group 2: 20221221
@@ -278,7 +280,7 @@ def nightly_packages_to_show(self: S3IndexType) -> List[S3Object]:
             package_name = full_package_name.split('-')[0]
             package_build_time = extract_package_build_time(full_package_name)
             # Hard pass on packages that are included in our allow list
-            if package_name not in PACKAGE_ALLOW_LIST:
+            if package_name.lower() not in PACKAGE_ALLOW_LIST:
                 to_hide.add(obj)
                 continue
             if package_build_time not in KEEP_NIGHTLY_PACKAGES_FOR_EXECUTORCH and (