CW-974: Add support for automatic node switching. (#2361)

* feat: Add support for automatic node switching.

This change:
- Adds isTrustedNodeForSwitching property to Node class.
- Adds UI Checkbox to mark a node as trusted for automatic switching in Node create or edit form.
- Implements checkNodeHealth method in wallet classes to verify node connectivity.
- Adds NodeSwitchingService for managing automatic node switching based on health checks.
- Adds setting option for user to enable/disable automated node switching

* fix(automatic-node-switch): Set node health check interval to 5 minutes in NodeSwitchingService

* refactor: Update handler method

* feat: Automatic Node Switching Improvements

This change:
- Moves enable automatic node switch to the Manage Nodes Page
- Adds check to verify node health before attempting to sync in EVM, Sol and Tron Wallets.
- Modifies trusted ndoes list for monero
- Adds trigger for Node Health Check when app resumes from background

* fix: Increase default request timeout for Tron and update health check interval for node switch

* feat: Enhance Node health check functionality.

This change adds additional checks for token balance in EVM, Solana and Tron Wallets in checkNodeHealth.

* fix: Update health check interval to 30 seconds in NodeSwitchingService

* Update bitcoin_electrum_server_list.yml

* fix: Electru wallet not connecting to new node after switching

* fix: Automated Node Switch not working on Decred Wallet

* fix: Add more nodes for AutoSwitching

This change:
- Enables more nodes across wallet types for auto switching
- Modifies CTA for checkbox
- Renames flags to fit

* fix: Add migration function for setting up default nodes for autoswitching

* fix: Review and testing fixes

* chore: Adjust balance and history fetch timer

lib/view_model/node_list/node_create_or_edit_view_model.dart

@@ -26,6 +26,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
         login = '',
         password = '',
         trusted = false,
+        isEnabledForAutoSwitching = false,
         useSocksProxy = false,
         socksProxyAddress = '';
 
@@ -56,6 +57,9 @@ abstract class NodeCreateOrEditViewModelBase with Store {
   @observable
   bool trusted;
 
+  @observable
+  bool isEnabledForAutoSwitching;
+
   @observable
   bool useSocksProxy;
 
@@ -118,6 +122,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
     password = '';
     useSSL = false;
     trusted = false;
+    isEnabledForAutoSwitching = false;
     useSocksProxy = false;
     socksProxyAddress = '';
   }
@@ -143,6 +148,9 @@ abstract class NodeCreateOrEditViewModelBase with Store {
   @action
   void setTrusted(bool val) => trusted = val;
 
+  @action
+  void setIsEnabledForAutoSwitching(bool val) => isEnabledForAutoSwitching = val;
+
   @action
   void setSocksProxy(bool val) => useSocksProxy = val;
 
@@ -159,6 +167,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
         password: password,
         useSSL: useSSL,
         trusted: trusted,
+        isEnabledForAutoSwitching: isEnabledForAutoSwitching,
         socksProxyAddress: socksProxyAddress);
     try {
       state = IsExecutingState();
@@ -190,6 +199,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
         password: password,
         useSSL: useSSL,
         trusted: trusted,
+        isEnabledForAutoSwitching: isEnabledForAutoSwitching,
         socksProxyAddress: socksProxyAddress);
     try {
       connectionState = IsExecutingState();

lib/view_model/node_list/node_list_view_model.dart

@@ -41,6 +41,13 @@ abstract class NodeListViewModelBase with Store {
       S.current.change_current_node(uri) +
       '${uri.endsWith('.onion') || uri.contains('.onion:') ? '\n' + (CakeTor.instance.enabled ? '' : S.current.orbot_running_alert) : ''}';
 
+  @computed
+  bool get enableAutomaticNodeSwitching => settingsStore.enableAutomaticNodeSwitching;
+
+  @action
+  void setEnableAutomaticNodeSwitching(bool value) =>
+      settingsStore.enableAutomaticNodeSwitching = value;
+
   final ObservableList<Node> nodes;
   final SettingsStore settingsStore;
   final Box<Node> _nodeSource;

lib/view_model/node_list/pow_node_list_view_model.dart

@@ -41,6 +41,13 @@ abstract class PowNodeListViewModelBase with Store {
       S.current.change_current_node(uri) +
       '${uri.endsWith('.onion') || uri.contains('.onion:') ? '\n' + (CakeTor.instance.enabled ? '' : S.current.orbot_running_alert) : ''}';
 
+  @computed
+  bool get enableAutomaticNodeSwitching => settingsStore.enableAutomaticNodeSwitching;
+
+  @action
+  void setEnableAutomaticNodeSwitching(bool value) =>
+      settingsStore.enableAutomaticNodeSwitching = value;
+
   final ObservableList<Node> nodes;
   final SettingsStore settingsStore;
   final Box<Node> _nodeSource;