ProjectExplorer: Update run config list centrally

This prodecure requires no further information from the specific project
managers, so we can start it from the ProjectExplorer itself.
Also wait until after project parsing has officially finished and the
run configurations have updated their "enabled" state. Otherwise,
RunConfiguration::isEnabled() will always return false, potentially
leading to the active run configuration getting switched
unintentionally.

Fixes: QTCREATORBUG-21692
Change-Id: I32f4f758b5baa6222329d07b811993568eff1ee3
Reviewed-by: hjk <hjk@qt.io>

src/plugins/cmakeprojectmanager/cmakeproject.cpp

@@ -375,8 +375,6 @@ void CMakeProject::updateProjectData(CMakeBuildConfiguration *bc)
         Target *t = bc->target();
         t->setApplicationTargets(bc->appTargets());
         t->setDeploymentData(bc->deploymentData());
-
-        t->updateDefaultRunConfigurations();
     }
 
     {