Validation on date type DFF to only allow users to enter current or later date

Summary:

There is unique requirement where we have a restriction that users should not be able to select backdated values from Date DFF and ideally old dates should be Grey out.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

23D

Code Snippet (add any code snippets that support your topic, if applicable):