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

cw_nano/lib/nano_client.dart

@@ -92,7 +92,7 @@ class NanoClient {
     return NanoBalance(currentBalance: cur, receivableBalance: rec);
   }
 
-  Future<AccountInfoResponse?> getAccountInfo(String address) async {
+  Future<AccountInfoResponse?> getAccountInfo(String address, {bool throwOnError = false}) async {
     try {
       final response = await ProxyWrapper().post(
         clearnetUri: _node!.uri,
@@ -110,6 +110,9 @@ class NanoClient {
       return AccountInfoResponse.fromJson(data);
     } catch (e) {
       printV("error while getting account info $e");
+      if (throwOnError) {
+        rethrow;
+      }
       return null;
     }
   }

cw_nano/lib/nano_wallet.dart

@@ -518,8 +518,19 @@ abstract class NanoWalletBase
     return _client.getN2Reps();
   }
 
+  @override
   Future<void>? updateBalance() async => await _updateBalance();
 
+  @override
+  Future<bool> checkNodeHealth() async {
+    try {
+      await _client.getAccountInfo(_publicAddress!, throwOnError: true);
+      return true;
+    } catch (_) {
+      return false;
+    }
+  }
+
   @override
   Future<void> renameWalletFiles(String newWalletName) async {
     final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type);