Fix "Edit -> Collection" by restoring ngOnInit() method which was accidentally removed

[tdonohue]

References

• Fixes Collection creation page is not rendered DSpace#8911

Description

Restores the ngOnInit() method to collection-form.component.ts which was accidentally removed in #2308

Instructions for Reviewers

• Verify Collection creation page is not rendered DSpace#8911 no longer reproducible
  • Login as an Admin
  • Go to "New -> Collection". Select a Community to add the Collection in
  • Verify the Collection form loads now, and verify that it allows you to create a Collection.

[tdonohue]

@atarix83 or @alisaismailati : Could you or someone on your team give this a quick look? It seems to have been accidentally caused by #2308 (which was merged last week)

[alisaismailati]

Hi @tdonohue ,
I will have a look at this task.

[tdonohue]

Closing, replaced by #2332