Make `development` flags to be `required`

What does this MR do?

Related to #241771 (closed) and !42268 (merged)

Closes #221056 (closed)

This is meant to be merged on Monday per our Feature Flag YAML - Rollout.

This does:

• add all leftover development feature flags
• ensures that licensed feature flags are actually checked against type: :licensed
• makes development to be optional: false, aka required

Does this MR meet the acceptance criteria?

Conformity

• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content