Enable self_managed_code_suggestions FF by default
What does this MR do and why?
Enables the self_managed_code_suggestions
feature flag by default, so that it's enabled for Self-Managed instances using 16.8
.
This is part of https://gitlab.com/gitlab-org/gitlab/-/issues/432983+. Actual functionality behind this feature flag will not be accessible until a later stage of https://gitlab.com/gitlab-org/fulfillment/meta/-/issues/1511#self-managed-deployment.
MR acceptance checklist
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Screenshots or screen recordings
No visual changes expected.
How to set up and validate locally
CI pipeline should continue to pass.