fix: fix can not update and claim staking after last update

Author: lanhaoxiang

app/components/Modal/StakingClaimModal.jsx

@@ -124,7 +124,7 @@ class StakingClaimModal extends React.Component {
         (item) => item !== null && item.get("name") === trustNodeName
       );
             this.setState({
-                trustNodeId: trustNode[0].get("id")
+                trustNodeId: trustNode.get(0).get("id")
             });
         } else {
             this.setState({

app/components/Modal/StakingCreateModal.jsx

@@ -153,7 +153,7 @@ class StakingCreateModal extends React.Component {
         AccountActions.createStaking(
           currentProgramID,
           this.state.ownerId,
-          ChainStore.getWitnessById(this.state.trustNodeId).get("id"),
+          ChainStore.getWitnessById(this.state.trustNode.get("id")).get("id"),
           amount * precision,
           currentProgram.weight,
           currentProgram.staking_days

app/components/Modal/StakingUpdateModal.jsx

@@ -122,7 +122,7 @@ class StakingUpdateModal extends React.Component {
         if (trustNodeName) {
             let trustNode = this.state.trustNodes.filter(item => item !== null && item.get("name") === trustNodeName);
             this.setState({
-                trustNodeId: trustNode[0].get("id")
+                trustNodeId: trustNode.get(0).get("id")
             });
         } else {
             this.setState({