Render labels using Text.QtRendering on OSX

Fonts were looking a bit to thick on when using `Text.NativeRendering`, so using `Text.QtRendering` instead. After this the font weight looks identical to figma (as far as I can see).

In this commit I also changed all `Label`'s to `UM.Label`'s and removed default properties where I could.

CURA-9154

plugins/3MFReader/WorkspaceDialog.qml

@@ -437,7 +437,6 @@ UM.Dialog
                 {
                     id: warningLabel
                     text: catalog.i18nc("@action:warning", "Loading a project will clear all models on the build plate.")
-                    wrapMode: Text.Wrap
                 }
             }
         }