fix(CommunityPermissions): clean warnings by preventing assigning when some roles doesn't exist

Closes: #9608

ui/StatusQ/src/StatusQ/Components/StatusItemSelector.qml

@@ -210,7 +210,7 @@ Rectangle {
 
                         asset.height: root.asset.height
                         asset.width: root.asset.width
-                        asset.name: root.useLetterIdenticons ? model.text : model.imageSource
+                        asset.name: root.useLetterIdenticons ? model.text : (model.imageSource ?? "")
                         asset.isImage: root.asset.isImage
                         asset.bgColor: root.asset.bgColor
                         asset.emoji: model.emoji ? model.emoji : ""

ui/app/AppLayouts/Chat/controls/community/ListDropdownContent.qml

@@ -81,16 +81,13 @@ StatusListView {
         width: ListView.view.width
         key: model.key
         name: model.name
-        shortName: !!model.shortName ? model.shortName : ""
-        iconSource: model.iconSource
+        shortName: model.shortName ?? ""
+        iconSource: model.iconSource ?? ""
         subItems: model.subItems
         selected: root.checkedKeys.includes(model.key)
 
-        onItemClicked: root.itemClicked(model.key,
-                                        model.name,
-                                        model.shortName,
-                                        model.iconSource,
-                                        model.subItems)
+        onItemClicked: root.itemClicked(
+                           key, name, shortName, iconSource, subItems)
     }
 
     section.property: root.searchMode ? "" : "categoryLabel"

ui/app/AppLayouts/Chat/helpers/CommunityPermissionsHelpers.qml

@@ -41,14 +41,14 @@ QtObject {
     function getTokenShortNameByKey(model, key) {
         const item = getTokenByKey(model, key)
         if (item)
-            return item.shortName
+            return item.shortName ?? ""
         return ""
     }
 
     function getTokenIconByKey(model, key) {
         const item = getTokenByKey(model, key)
         if (item)
-            return item.iconSource
+            return item.iconSource ?? ""
         return ""
     }
 

ui/app/AppLayouts/Chat/views/communities/CommunityPermissionsView.qml

@@ -69,7 +69,6 @@ StatusScrollView {
 
                     sourceModel: model.channelsListModel
 
-
                     proxyRoles: [
                         ExpressionRole {
                             name: "imageSource"