Run configure once to apply cmake preferences for CMake file api usage

When we use the cmake file API we have to run configure to reload the
model. In such a case, when we run configure to apply the new cmake
preferences, we can just run reloadModel directly. Otherwise, we'd
end up running configure twice.

BUG: 429605

plugins/cmake/settings/cmakepreferences.cpp

@@ -39,6 +39,7 @@
 #include "cmakebuilderconfig.h"
 #include <debug.h>
 #include <cmakeutils.h>
+#include <cmakefileapi.h>
 #include <interfaces/iproject.h>
 #include <project/interfaces/ibuildsystemmanager.h>
 #include <project/interfaces/iprojectbuilder.h>
@@ -384,6 +385,13 @@ void CMakePreferences::removeBuildDir()
 
 void CMakePreferences::configure()
 {
+    if (CMake::FileApi::supported(CMake::currentCMakeExecutable(m_project).toLocalFile())) {
+        // the file api already does a configure internally when we reload the model
+        // so don't do it twice
+        m_project->reloadModel();
+        return;
+    }
+
     IProjectBuilder *b=m_project->buildSystemManager()->builder();
     KJob* job=b->configure(m_project);
     if( m_currentModel ) {