Kotlin Facet: Suppress bogus warning about language/api version

#KT-17848 Fixed

idea/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCompilerConfigurableTab.java

@@ -131,6 +131,7 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
         this.k2jvmCompilerArguments = k2jvmCompilerArguments;
         this.isProjectSettings = isProjectSettings;
 
+        if (isProjectSettings) {
             languageVersionComboBox.addActionListener(
                     new ActionListener() {
                         @Override
@@ -139,6 +140,7 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
                         }
                     }
             );
+        }
 
         additionalArgsOptionsField.attachLabel(additionalArgsLabel);
 
@@ -298,7 +300,7 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     }
 
     @SuppressWarnings("unchecked")
-    private void restrictAPIVersions() {
+    public void restrictAPIVersions() {
         ApiVersion selectedAPIVersion = getSelectedAPIVersion();
         final LanguageVersion selectedLanguageVersion = getSelectedLanguageVersion();
         List<ApiVersion> permittedAPIVersions = ArraysKt.mapNotNull(

idea/src/org/jetbrains/kotlin/idea/facet/KotlinFacetEditorGeneralTab.kt

@@ -246,7 +246,10 @@ class KotlinFacetEditorGeneralTab(
             outputDirectory.textField.validateOnChange()
             copyRuntimeFilesCheckBox.validateOnChange()
             moduleKindComboBox.validateOnChange()
-            languageVersionComboBox.validateOnChange()
+            languageVersionComboBox.addActionListener {
+                restrictAPIVersions()
+                doValidate()
+            }
             apiVersionComboBox.validateOnChange()
             coroutineSupportComboBox.validateOnChange()
         }