cxx-qt-gen: more test case fixes

Author: jnbooth

crates/cxx-qt-gen/test_outputs/cfgs.rs

@@ -245,6 +245,7 @@ mod ffi {
         #[namespace = "rust::cxxqtgen1"]
         type QObjectDisabledCxxQtSignalHandlersignal_disabled<'a> =
             cxx_qt::signalhandler::CxxQtSignalHandler<
+                'a,
                 super::QObjectDisabledCxxQtSignalClosuresignal_disabled,
             >;
         #[doc(hidden)]