improvement: fdi tooth chart selection modes polished. bugs related to teeth selecyion fixed.

backend/prisma/schema.prisma

@@ -379,7 +379,7 @@ model LabCaseTask {
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
-  @@unique([labCaseId, treatmentDetailId, selectionGroupId, prosthesisTypeCode, stepOrder])
+  @@unique([labCaseId, treatmentDetailId, prosthesisTypeCode, stepOrder], map: "lab_case_tasks_case_detail_prosthesis_step_key")
   @@index([labCaseId, status])
   @@index([assigneeUserId])
   @@map("lab_case_tasks")