feat(medusa): remove created reservations on subsequent failure for cart completion (#3554)

**What**
- If cart completion fails after creating reservations, remove those reservations

**Why**
- To avoid hanging reservations if something fails at a later point

packages/medusa/src/utils/exception-formatter.ts

@@ -4,6 +4,7 @@ export enum PostgresError {
   DUPLICATE_ERROR = "23505",
   FOREIGN_KEY_ERROR = "23503",
   SERIALIZATION_FAILURE = "40001",
+  NULL_VIOLATION = "23502",
 }
 
 export const formatException = (err): MedusaError => {
@@ -43,6 +44,12 @@ export const formatException = (err): MedusaError => {
         err?.detail ?? err?.message
       )
     }
+    case PostgresError.NULL_VIOLATION: {
+      return new MedusaError(
+        MedusaError.Types.INVALID_DATA,
+        `Can't insert null value in field ${err?.column} on insert in table ${err?.table}`
+      )
+    }
     default:
       return err
   }