Fix `ci_usage_warning_message` message builder
Description
This is the first thing I see after creating a new project on gitlab.com -- something hitting me up for purchase without describing what it is or why I need to do it?
Analysis
The issue is with this line then https://gitlab.com/gitlab-org/gitlab/blob/561fd235d6bb8a8ada2351cc24ff9b72cfe7881e/ee/app/helpers/ee/runners_helper.rb#L7 Previously message was a string, so this check was good, but it looks like message became an array recently so this check is no longer valid.
Reported Support Tickets
- https://gitlab.zendesk.com/agent/tickets/132313
- https://gitlab.zendesk.com/agent/tickets/132371
- https://gitlab.zendesk.com/agent/tickets/132401
- https://gitlab.zendesk.com/agent/tickets/132412
- https://gitlab.zendesk.com/agent/tickets/132410
- https://gitlab.zendesk.com/agent/tickets/132409
- https://gitlab.zendesk.com/agent/tickets/132375
- https://gitlab.zendesk.com/agent/tickets/132415
- https://gitlab.zendesk.com/agent/tickets/132428
- https://gitlab.zendesk.com/agent/tickets/132418
- https://gitlab.zendesk.com/agent/tickets/132425
- https://gitlab.zendesk.com/agent/tickets/132422
- https://gitlab.zendesk.com/agent/tickets/132432
- https://gitlab.zendesk.com/agent/tickets/132447
- https://gitlab.zendesk.com/agent/tickets/132468
- https://gitlab.zendesk.com/agent/tickets/132454
- https://gitlab.zendesk.com/agent/tickets/132460
- https://gitlab.zendesk.com/agent/tickets/132455
- https://gitlab.zendesk.com/agent/tickets/132475
- https://gitlab.zendesk.com/agent/tickets/132482
- https://gitlab.zendesk.com/agent/tickets/132490
- https://gitlab.zendesk.com/agent/tickets/132474
- https://gitlab.zendesk.com/agent/tickets/132501
- https://gitlab.zendesk.com/agent/tickets/132502
- https://gitlab.zendesk.com/agent/tickets/132496
- https://gitlab.zendesk.com/agent/tickets/132520
- https://gitlab.zendesk.com/agent/tickets/132504
- https://gitlab.zendesk.com/agent/tickets/132522
- https://gitlab.zendesk.com/agent/tickets/132531
- https://gitlab.zendesk.com/agent/tickets/132410
- #32156 (closed)
- https://gitlab.zendesk.com/agent/tickets/132564
- https://gitlab.zendesk.com/agent/tickets/132543
- https://gitlab.zendesk.com/agent/tickets/132562
- https://gitlab.zendesk.com/agent/tickets/132559
- https://gitlab.zendesk.com/agent/tickets/132550
- https://gitlab.zendesk.com/agent/tickets/132549
- https://gitlab.zendesk.com/agent/tickets/132542
- https://gitlab.zendesk.com/agent/tickets/132539
- https://gitlab.zendesk.com/agent/tickets/132529
- https://gitlab.zendesk.com/agent/tickets/132414
- https://gitlab.zendesk.com/agent/tickets/132456
- https://gitlab.zendesk.com/agent/tickets/132513
- https://gitlab.zendesk.com/agent/tickets/132556
- https://gitlab.zendesk.com/agent/tickets/132555
- https://gitlab.zendesk.com/agent/tickets/132577
- https://gitlab.zendesk.com/agent/tickets/132541
- https://gitlab.zendesk.com/agent/tickets/132532
- https://gitlab.zendesk.com/agent/tickets/132536
- https://gitlab.zendesk.com/agent/tickets/132518
- https://gitlab.zendesk.com/agent/tickets/132446
- https://gitlab.zendesk.com/agent/tickets/132525
- https://gitlab.zendesk.com/agent/tickets/132579
- https://gitlab.zendesk.com/agent/tickets/132464
- https://gitlab.zendesk.com/agent/tickets/132589
- https://gitlab.zendesk.com/agent/tickets/132590
- https://gitlab.zendesk.com/agent/tickets/132519
- https://gitlab.zendesk.com/agent/tickets/132533
- https://gitlab.zendesk.com/agent/tickets/132249
- https://gitlab.zendesk.com/agent/tickets/132594
- https://gitlab.zendesk.com/agent/tickets/132592
- https://gitlab.zendesk.com/agent/tickets/132601
- https://gitlab.zendesk.com/agent/tickets/132602
- https://gitlab.zendesk.com/agent/tickets/132605
- https://gitlab.zendesk.com/agent/tickets/132618
- https://gitlab.zendesk.com/agent/tickets/132591