chore(AccountSelector): Default to the first item in the account selector when the pre-selected address is not found in the model

There are cases when the AccountSelector can receive invalid address in the input API. In this case we'll default to the first selected item

ui/imports/shared/controls/AccountSelector.qml

@@ -122,6 +122,11 @@ StatusComboBox {
         sourceModel: root.model ?? null
         key: "address"
         value: d.currentAccountSelection
+        onAvailableChanged: {
+            if (!available) {
+                d.resetSelection()
+            }
+        }
     }
 
     QtObject {
@@ -131,6 +136,15 @@ StatusComboBox {
         Binding on currentAccountSelection {
             value: root.selectedAddress || root.currentValue
         }
+
+        function resetSelection() {
+            currentAccountSelection = ""
+        }
+    }
+
+    Component.onCompleted: {
+        if (!selectedEntry.available)
+            d.resetSelection()
     }
 }