Wizard: minor, commonize settings initialization with default values

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/core/context/SettingsWritingContext.kt

@@ -21,4 +21,11 @@ open class SettingsWritingContext(context: Context, servicesManager: ServicesMan
     fun <V : Any, T : SettingType<V>> SettingReference<V, T>.setValue(newValue: V) {
         context.settingContext[this] = newValue
     }
+
+    fun <V : Any, T : SettingType<V>> SettingReference<V, T>.setSettingValueToItsDefaultIfItIsNotSetValue() {
+        val defaultValue = savedOrDefaultValue ?: return
+        if (notRequiredSettingValue == null) {
+            setValue(defaultValue)
+        }
+    }
 }

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/moduleConfigurators/ModuleConfigurator.kt

@@ -169,11 +169,7 @@ interface ModuleConfiguratorWithSettings : ModuleConfigurator {
     fun SettingsWritingContext.initDefaultValuesFor(module: Module) {
         withSettingsOf(module) {
             getConfiguratorSettings().forEach { setting ->
-                val reference = setting.reference
-                val defaultValue = reference.savedOrDefaultValue ?: return@forEach
-                if (reference.notRequiredSettingValue == null) {
-                    reference.setValue(defaultValue)
-                }
+                setting.reference.setSettingValueToItsDefaultIfItIsNotSetValue()
             }
         }
     }

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/templates/Template.kt

@@ -78,11 +78,7 @@ abstract class Template : SettingsOwner, EntitiesOwnerDescriptor {
     fun SettingsWritingContext.initDefaultValuesFor(module: Module) {
         withSettingsOf(module) {
             settings.forEach { setting ->
-                val reference = setting.reference
-                val defaultValue = reference.savedOrDefaultValue ?: return@forEach
-                if (reference.notRequiredSettingValue == null) {
-                    reference.setValue(defaultValue)
-                }
+                setting.reference.setSettingValueToItsDefaultIfItIsNotSetValue()
             }
         }
     }

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/wizard/Wizard.kt

@@ -40,10 +40,7 @@ abstract class Wizard(createPlugins: PluginsCreator, val servicesManager: Servic
     private fun initPluginDefaultValues() {
         with(settingsWritingContext) {
             for (setting in pluginSettings) {
-                if (setting.reference.notRequiredSettingValue == null) {
-                    val defaultValue = setting.reference.savedOrDefaultValue ?: continue
-                    setting.reference.setValue(defaultValue)
-                }
+                setting.reference.setSettingValueToItsDefaultIfItIsNotSetValue()
             }
         }
     }