Fix participant matching failing due to updating all columns instead of only changed fields (#18105)

The updateMany in matchParticipants was spreading the entire participant
object into the SET clause, which included generated columns
(searchVector) and composite field columns (createdBySource) that can't
be written to. Narrowed the update to only set personId and
workspaceMemberId.
```
[1] query failed: UPDATE "workspace_3ixj3i1a5avy16ptijtb3lae3"."calendarEventParticipant" SET "id" = $1, "createdAt" = $2, "updatedAt" = $3, "deletedAt" = $4, "createdBySource" = $5, "createdByWorkspaceMemberId" = $6, "createdByName" = $7, "createdByContext" = $8, "updatedBySource" = $9, "updatedByWorkspaceMemberId" = $10, "updatedByName" = $11, "updatedByContext" = $12, "position" = $13, "searchVector" = $14, "handle" = $15, "displayName" = $16, "isOrganizer" = $17, "responseStatus" = $18, "calendarEventId" = $19, "personId" = $20, "workspaceMemberId" = $21 WHERE "id" = $22 RETURNING * -- PARAMETERS: ["f1526103-451a-429f-9743-3a81c3a3e3aa","2026-02-19T22:23:32.354Z","2026-02-19T22:23:32.354Z",null,"MANUAL",null,"System",null,"MANUAL",null,"System",null,0,"'test@test.com':1","test@test.com","",false,"NEEDS_ACTION","fb1892a8-6daf-435b-a43b-e8fe8693eb99","60bf9e82-f1b7-4bed-a1af-7039fb9c32f5",null,"f1526103-451a-429f-9743-3a81c3a3e3aa"]
[1] error: error: column "searchVector" can only be updated to DEFAULT
[1] Exception Captured
[1]   undefined
[1]   [
[1]     PostgresException [Error]: Data validation error.
[1]         at computeTwentyORMException (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/engine/twenty-orm/error-handling/compute-twenty-orm-exception.js:35:19)
[1]         at WorkspaceUpdateQueryBuilder.executeMany (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/engine/twenty-orm/repository/workspace-update-query-builder.js:269:82)
[1]         at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
[1]         at async WorkspaceRepository.updateMany (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/engine/twenty-orm/repository/workspace.repository.js:234:25)
[1]         at async MatchParticipantService.matchParticipants (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/modules/match-participant/match-participant.service.js:93:13)
[1]         at async /Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/modules/match-participant/match-participant.service.js:160:13
[1]         at async MatchParticipantService.matchParticipantsForPeople (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/modules/match-participant/match-participant.service.js:130:9)
[1]         at async CalendarEventParticipantMatchParticipantJob.handle (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/modules/calendar/calendar-event-participant-manager/jobs/calendar-event-participant-match-participant.job.js:45:13)
[1]         at async MessageQueueExplorer.invokeProcessMethods (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/engine/core-modules/message-queue/message-queue.explorer.js:113:17)
[1]         at async MessageQueueExplorer.handleProcessor (/Users/huzef/Documents/bounties/twenty/packages/twenty-server/dist/engine/core-modules/message-queue/message-queue.explorer.js:104:13) {
[1]       code: '428C9'
[1]     }
[1]   ]
```

packages/twenty-server/src/modules/match-participant/match-participant.service.ts

@@ -186,7 +186,10 @@ export class MatchParticipantService<
       await participantRepository.updateMany(
         partipantsToBeUpdated.map((participant) => ({
           criteria: participant.id,
-          partialEntity: participant,
+          partialEntity: {
+            personId: participant.personId,
+            workspaceMemberId: participant.workspaceMemberId,
+          },
         })),
       );