Prerequisite flag events omit user

[eli-darkly]

We've discovered a bug that affects Ruby SDK users who are also using the event debugger and/or data export, if there are prerequisite flags.

If feature flag A uses flag B as a prerequisite, and you evaluate A, two events are generated—one for each flag. Both should contain the same user data, since they were both evaluated for the same user. However, the event for B does not contain any user data. This could cause evaluations of B (when used as a prerequisite, rather than evaluating B directly) to be omitted from statistics.

This will be fixed in the next patch release.