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/pipsupport.cpp

@@ -81,8 +81,10 @@ void PipInstallTask::cancel()
     m_process.stop();
     m_process.waitForFinished();
     Core::MessageManager::writeFlashing(
-        Tr::tr("The %1 installation was canceled by %2.")
-            .arg(packagesDisplayName(), m_killTimer.isActive() ? Tr::tr("user") : Tr::tr("time out")));
+        m_killTimer.isActive()
+            ? Tr::tr("The installation of \"%1\" was canceled by timeout.").arg(packagesDisplayName())
+            : Tr::tr("The installation of \"%1\" was canceled by the user.")
+                  .arg(packagesDisplayName()));
 }
 
 void PipInstallTask::handleDone()

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())};
             }
         }