Do not append "- copy" to the requests inside a Collection when the whole collection is duplicated

[cozyCodr]

Checklist

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Enhancement request

Whenever a new duplicate is of a collection is made it would be much better if the duplicate collection's elements do not have "- copy" appended to them. It should only append it to the duplicate collection itself.

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Problem it solves

For a duplicate collection with many request in it which has all its requests with "-copy" appended it becomes a pain try to edit each and every requests' name to fix.

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