QML warnings for BoldLabel and MainView (patch)

I see couple of warnings (I think for a long while) while launching riseup-vpn and clicking on Preferences.

qrc:/components/BoldLabel.qml:15:5: Unable to assign [undefined] to QString

qrc:/components/MainView.qml:41:17: Unable to assign [undefined] to bool

The Rectangle that uses BoldLabel has no text so it does not make sense to add that.

This patch fixes the warnings.

--- a/gui/components/BoldLabel.qml
+++ b/gui/components/BoldLabel.qml
@@ -12,7 +12,6 @@
         bold: true
     }
 
-    text: parent.text
     Accessible.name: text
     Accessible.role: Accessible.StaticText
 }
--- a/gui/components/MainView.qml
+++ b/gui/components/MainView.qml
@@ -40,16 +40,11 @@
                 text: model.text
                 visible: {
                     if (model.text == qsTr("Donate")) {
-                        if (!isDonationService) {
-                            return false;
-                        }
+                        return isDonationService
                     } else if (model.text == qsTr("Switch Provider")) {
-                        if (ctx.appName != qsTr("Bitmask")) {
-                            return false;
-                        }
-                    } else {
-                        return true;
+                        return ctx.appName == qsTr("Bitmask")
                     }
+                    return true;
                 }
                 highlighted: ListView.isCurrentItem
                 icon.color: "transparent"