DDC-3677: [GH-1375] DDC-3671 prevent duplicate unique index

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of webimpress:

Url: #1375

Message:

[doctrinebot]

• duplicates DDC-3671: Duplicated unique indexes (@UniqueConstraint annotation)

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1375] was labeled:
#1375

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1375] was unlabeled:
#1375

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1375] was unassigned:
#1375

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1375] was assigned:
#1375

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1375] was merged:
#1375

[doctrinebot]

Issue was closed with resolution "Fixed"