RTLlanguages: Fix crash when opening settings

Delete the preferedWidth of a row in the accountComboBox to avoid an
infinite polish() loop when accessing the settings with an RTL language.

GitLab: #1945

Change-Id: I37a4a1c61a296743835d677ab242c0fe214e8d16

src/app/mainview/components/AccountComboBox.qml

@@ -88,7 +88,6 @@ Label {
 
                 spacing: 10
 
-
                 Avatar {
                     id: avatar
                     objectName: "accountComboBoxAvatar"
@@ -147,7 +146,6 @@ Label {
 
             spacing: 10
 
-            Layout.preferredWidth: childrenRect.width
             Layout.preferredHeight: parent.height
 
             JamiPushButton {