fix: Use actual nodeID in HandleMetadataV1 and HandleMetadataV3V4

Found and fixed 6 additional instances of hardcoded nodeID=1 in:
- HandleMetadataV1 (2 instances in partition metadata)
- HandleMetadataV3V4 (4 instances in partition metadata)

All Metadata response versions (v0-v8) now correctly use the broker's actual
nodeID for LeaderID, ReplicaNodes, and IsrNodes instead of hardcoded 1.

This ensures consistent metadata across all API versions.

weed/mq/kafka/protocol/handler.go

@@ -1609,15 +1609,15 @@ func (h *Handler) HandleMetadataV2(correlationID uint32, requestBody []byte) ([]
 		for partitionID := int32(0); partitionID < partitionCount; partitionID++ {
 			binary.Write(&buf, binary.BigEndian, int16(0))    // ErrorCode
 			binary.Write(&buf, binary.BigEndian, partitionID) // PartitionIndex
-			binary.Write(&buf, binary.BigEndian, int32(1))    // LeaderID
+			binary.Write(&buf, binary.BigEndian, nodeID)    // LeaderID
 
 			// ReplicaNodes array (4 bytes length + nodes)
 			binary.Write(&buf, binary.BigEndian, int32(1)) // 1 replica
-			binary.Write(&buf, binary.BigEndian, int32(1)) // NodeID 1
+			binary.Write(&buf, binary.BigEndian, nodeID) // NodeID 1
 
 			// IsrNodes array (4 bytes length + nodes)
 			binary.Write(&buf, binary.BigEndian, int32(1)) // 1 ISR node
-			binary.Write(&buf, binary.BigEndian, int32(1)) // NodeID 1
+			binary.Write(&buf, binary.BigEndian, nodeID) // NodeID 1
 		}
 	}
 
@@ -1723,15 +1723,15 @@ func (h *Handler) HandleMetadataV3V4(correlationID uint32, requestBody []byte) (
 		for partitionID := int32(0); partitionID < partitionCount; partitionID++ {
 			binary.Write(&buf, binary.BigEndian, int16(0))    // ErrorCode
 			binary.Write(&buf, binary.BigEndian, partitionID) // PartitionIndex
-			binary.Write(&buf, binary.BigEndian, int32(1))    // LeaderID
+			binary.Write(&buf, binary.BigEndian, nodeID)    // LeaderID
 
 			// ReplicaNodes array (4 bytes length + nodes)
 			binary.Write(&buf, binary.BigEndian, int32(1)) // 1 replica
-			binary.Write(&buf, binary.BigEndian, int32(1)) // NodeID 1
+			binary.Write(&buf, binary.BigEndian, nodeID) // NodeID 1
 
 			// IsrNodes array (4 bytes length + nodes)
 			binary.Write(&buf, binary.BigEndian, int32(1)) // 1 ISR node
-			binary.Write(&buf, binary.BigEndian, int32(1)) // NodeID 1
+			binary.Write(&buf, binary.BigEndian, nodeID) // NodeID 1
 		}
 	}