fix(wallet): Disable adding new watch-only accounts (#15970)

closes: #15933

Co-authored-by: belalshehab <belal@status.im>

ui/imports/shared/popups/addaccount/states/Main.qml

@@ -9,6 +9,8 @@ import StatusQ.Controls 0.1
 import StatusQ.Controls.Validators 0.1
 
 import utils 1.0
+import StatusQ 0.1
+import SortFilterProxyModel 0.2
 
 import "../stores"
 import "../panels"
@@ -49,6 +51,20 @@ Item {
         id: d
         readonly property bool isEdit: root.store.editMode
 
+        readonly property SortFilterProxyModel originModelWithoutWatchOnlyAcc: SortFilterProxyModel {
+            id: originModelWithoutWatchOnlyAcc
+            objectName: "originModelWithoutWatchOnlyAcc"
+            sourceModel: root.store.originModel
+
+            readonly property string addWatchOnlyAccKeyUid: Constants.appTranslatableConstants.addAccountLabelOptionAddWatchOnlyAcc
+            filters: [
+                FastExpressionFilter {
+                    expression: model.keyPair.keyUid !== originModelWithoutWatchOnlyAcc.addWatchOnlyAccKeyUid
+                    expectedRoles: ["keyPair"]
+                }
+            ]
+        }
+
         function openEmojiPopup(showLeft) {
             if (!root.store.emojiPopup) {
                 return
@@ -171,7 +187,7 @@ Item {
                 anchors.horizontalCenter: parent.horizontalCenter
 
                 userProfilePublicKey: root.store.userProfilePublicKey
-                originModel: root.store.editMode? [] : root.store.originModel
+                originModel: root.store.editMode? [] : d.originModelWithoutWatchOnlyAcc
                 selectedOrigin: root.store.selectedOrigin
                 caretVisible: !root.store.editMode
                 enabled: !root.store.editMode