fix(worker-ops): use internal setter for scheduler tx pointer

Author: liobrasil

cadence/contracts/FlowYieldVaultsEVMWorkerOps.cdc

@@ -311,7 +311,7 @@ access(all) contract FlowYieldVaultsEVMWorkerOps {
                 cancelledIds.append(schedulerTransactionId)
             }
             // Clear cached scheduler pointer to avoid stale transaction ID after cancellation.
-            schedulerHandler.nextSchedulerTransactionId = nil
+            schedulerHandler.clearNextSchedulerTransactionId()
 
             emit AllExecutionsStopped(
                 cancelledIds: cancelledIds,
@@ -725,6 +725,12 @@ access(all) contract FlowYieldVaultsEVMWorkerOps {
             )
         }
 
+        /// @notice Clears the cached next scheduler transaction ID
+        /// @dev Used by Admin.stopAll() after cancelling scheduler execution
+        access(contract) fun clearNextSchedulerTransactionId() {
+            self.nextSchedulerTransactionId = nil
+        }
+
         /// @notice Helper function to schedule a transaction for the SchedulerHandler
         /// @dev This function is used for both recurrent scheduling and WorkerHandler scheduling
         /// @param manager The scheduler manager