Repro steps:
1. Create an enum keyword in shader graph
2. Name the first entry "A"
3. Name the second entry "a"
Expected result: the input should detect that the sanitized name will overlap and change the display name of the second entry to prevent this
Actual result: the reference name is sanitized to something that's different from the sanitized version of the display name, with makes it so the enum will no longer work correctly

Doc ticket: https://unity3d.atlassian.net/browse/DOC-2830