As an event participant, I want to be informed if the participant questions have been changedremoved when I edit my registration, so that I can have updated information on data retention related to my registrationparticipant data and so that I can make informed decisions about what I do or do not share.
**Explanation of behavior:** When an organizer removes a question, they no longer see the participant data in the organizer side of the user interface. However, from the data retention standpoint, we always aggregate the answers of the participants, even if the organizer has removed a question. When we do the final aggregation (when the event is over), When we do the final aggregation (when the event is over) we check if there is any aggregated data associated with questions that were removed. If there is aggregated data for removed questions, we delete this data. We will also not allow organizers to edit their selection of questions if the event has ended. Overall, by doing this, we change the behavior so organizers can still access data that they choose to collect again (if the event is not over), we change the behavior so organizers can still access data that they choose to collect again (if the event is not over) but it will still delete data if they do not choose to collect it again.
**Acceptance Criteria:**
* Given that an organizer has opened registration,
** And a participant has registered for the event,
*** And the organizer then adds another participant question,
**** And the participant chooses to edit their registration,
***** The participant should see: TBD [should inform them that a question has been added, and ideally which one]
* Given that an organizer has opened registration,
** And a participant has registered for the event,
*** And the organizer then removes participant question,
**** And the participant chooses to edit their registration,
***** The participant should see: TBD [should inform them that the""The following question hass have been removed for new registrants,by the organizer. and theyYou can still change their answeryour responses in case the organizerquestion is re-enables befored by the event ends; otherwise,organizer." their answer for that question will be deleted)
* Documentation of the [[https://www.mediawiki.org/wiki/Extension:CampaignEvents/Api#Get_your_registration_information | "Get your registration information" ]] API endpoint is updated to mention the `removed` property in the response.
**Visual examples (two possibilities/ideas):**
{F42469207}