Release the routable tokens feature

What does this MR do and why?

Release the routable tokens feature that was behind a feature flag

Changelog: added

References

• [Feature flag] Rollout of `routable_runner_token` (#505790 - closed)
• Release the routable tokens feature (!186679 - merged)

Screenshots or screen recordings

N/A

How to set up and validate locally

N/A

MR acceptance checklist

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