Auto-focus OK only for ClearMessagesPopup

src/qml/Base/HBox.qml

@@ -95,7 +95,7 @@ Rectangle {
                               true : modelData.enabled) &&
                              ! button.loading
 
-                    onClicked: buttonCallbacks[modelData.name](button)
+                    onClicked: buttonCallbacks[name](button)
 
                     Keys.onLeftPressed: previous.forceActiveFocus()
                     Keys.onUpPressed: previous.forceActiveFocus()
@@ -105,7 +105,7 @@ Rectangle {
                     Keys.onEnterPressed: Keys.onReturnPressed(event)
 
                     Component.onCompleted:
-                        if (modelData.name == focusButton) forceActiveFocus()
+                        if (name == focusButton) forceActiveFocus()
 
                     Layout.fillWidth: true
                     Layout.preferredHeight: theme.baseElementsHeight

src/qml/Base/HBoxPopup.qml

@@ -18,7 +18,6 @@ HPopup {
     property bool okEnabled: true
 
 
-    box.focusButton: "ok"
     box.clickButtonOnEnter: "ok"
     box.buttonModel: [
         { name: "ok", text: okText, iconName: "ok" , enabled: okEnabled},

src/qml/Chat/ClearMessagesPopup.qml

@@ -7,6 +7,7 @@ HBoxPopup {
         "The messages will only be removed on your side. " +
         "They will be available again after you restart the application."
     )
+    box.focusButton: "ok"
 
     onOk: py.callClientCoro(userId, "clear_events", [roomId])