Improve messaging/calendar create contact performance (#5314)

In this PR, I'm refactoring the way we associate messageParticipant post
person/company creation. Instead of looking a all person without
participant, we are passing the one that were just created.

Also, I'm making sure the message and messageParticipant creation
transaction is commited before creating person/company creation (and
then messageParticipant association)

packages/twenty-server/src/modules/calendar/repositories/calendar-event-participant.repository.ts

@@ -212,7 +212,7 @@ export class CalendarEventParticipantRepository {
           handle: 'text',
           displayName: 'text',
           isOrganizer: 'boolean',
-          responseStatus: `${dataSourceSchema}."calendarEventParticipant_responsestatus_enum"`,
+          responseStatus: `${dataSourceSchema}."calendarEventParticipant_responseStatus_enum"`,
         },
       );