Enable new type inference algorithm for IDE analysis

Note that this change doesn't affect compilation: if a project used
 old inference, then it'll continue to use it.

 To use old inference one can uncheck "Enable new type inference..."
 option in "Kotlin Compiler" tab

idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/NewInferenceForIDEAnalysisComponent.kt

@@ -10,7 +10,7 @@ import com.intellij.openapi.project.Project
 
 object NewInferenceForIDEAnalysisComponent {
     private const val inferenceOption = "kotlin.use.new.inference.for.ide.analysis"
-    private const val defaultState = false
+    private const val defaultState = true
 
     @JvmStatic
     fun setEnabled(project: Project, state: Boolean) {