Tr/Python: Fix translation issues

- Use parametrization
- Split message that relied on sentence structure of the language

Change-Id: I5c0cca684bc9c94219e740fe0292e358a91714da
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/python/pythonsettings.cpp

@@ -634,7 +634,8 @@ static void addPythonsFromRegistry(QList<Interpreter> &pythons)
             const FilePath &executable = FilePath::fromUserInput(regVal.toString());
             if (executable.exists() && !alreadyRegistered(pythons, executable)) {
                 pythons << Interpreter{QUuid::createUuid().toString(),
-                                       name + Tr::tr(" (Windowed)"),
+                                       //: <python display name> (Windowed)
+                                       Tr::tr("%1 (Windowed)").arg(name),
                                        FilePath::fromUserInput(regVal.toString())};
             }
         }