fix(Swap): Fixing the account balance in the swap modal

The root cause of this issue is the improper computation of the  `accountBalance`  expression role in the accounts model. Its value depends on another model (`filteredBalancesModel`) and by the time the expression role gets computed the proper `balance ` is not ready in the `filteredBalancesModel`.

This is a quick fix, but maybe the real fix should be restructuring the adapter and the model dependencies. I'd look out for any `ModelUtils` usage and replace it with a declarative approach if possible.

ui/app/AppLayouts/Wallet/popups/swap/SwapModal.qml

@@ -442,7 +442,7 @@ StatusDialog {
             accountAddress: root.swapAdaptor.selectedAccount.address
             accountEmoji: root.swapAdaptor.selectedAccount.emoji
             accountColor: Utils.getColorForId(root.swapAdaptor.selectedAccount.colorId)
-            accountBalanceFormatted: payPanel.accountBalanceFormatted // FIXME https://github.com/status-im/status-desktop/issues/15554
+            accountBalanceFormatted: root.swapAdaptor.selectedAccount.accountBalance.formattedBalance
 
             networkShortName: networkFilter.singleSelectionItemData.shortName
             networkName: networkFilter.singleSelectionItemData.chainName

ui/app/AppLayouts/Wallet/popups/swap/SwapModalAdaptor.qml

@@ -38,6 +38,7 @@ QObject {
     // Probably this data transformation should live there since they have common base.
     readonly property var nonWatchAccounts: SortFilterProxyModel {
         sourceModel: root.swapStore.accounts
+        delayed: true // Delayed to allow `processAccountBalance` dependencies to be resolved
         filters: ValueFilter {
             roleName: "canSend"
             value: true
@@ -49,7 +50,17 @@ QObject {
         proxyRoles: [
             FastExpressionRole {
                 name: "accountBalance"
-                expression: d.processAccountBalance(model.address)
+                expression: {
+                    // dependencies
+                    root.swapFormData.fromTokensKey
+                    root.fromToken
+                    root.fromToken.symbol
+                    root.fromToken.decimals
+                    root.swapFormData.selectedNetworkChainId
+                    root.swapFormData.fromTokensKey
+
+                    return d.processAccountBalance(model.address)
+                }
                 expectedRoles: ["address"]
             },
             FastExpressionRole {