PythonEditor: Fix run config names

Change-Id: I1131fdfdb1599bf470db502c222792d4419fa13e
Reviewed-by: hjk <hjk@qt.io>

src/plugins/pythoneditor/pythoneditorplugin.cpp

@@ -191,6 +191,7 @@ void PythonRunConfiguration::initialize(Core::Id id)
     RunConfiguration::initialize(id);
 
     m_mainScript = scriptFromId(id);
+    setDisplayName(defaultDisplayName());
 
     Environment sysEnv = Environment::systemEnvironment();
     const QString exec = sysEnv.searchInPath("python").toString();