Enable SAM conversion for Kotlin functions by default in new inference

KT-25686

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -210,6 +210,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
 
             if (newInference) {
                 put(LanguageFeature.NewInference, LanguageFeature.State.ENABLED)
+                put(LanguageFeature.SamConversionForKotlinFunctions, LanguageFeature.State.ENABLED)
             }
 
             if (legacySmartCastAfterTry) {
@@ -247,13 +248,22 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     private fun HashMap<LanguageFeature, LanguageFeature.State>.configureLanguageFeaturesFromInternalArgs(collector: MessageCollector) {
         val featuresThatForcePreReleaseBinaries = mutableListOf<LanguageFeature>()
 
+        var samConversionsExplicitlyPassed = false
         for ((feature, state) in internalArguments.filterIsInstance<ManualLanguageFeatureSetting>()) {
+            if (feature == LanguageFeature.SamConversionForKotlinFunctions) {
+                samConversionsExplicitlyPassed = true
+            }
+
             put(feature, state)
             if (state == LanguageFeature.State.ENABLED && feature.forcesPreReleaseBinariesIfEnabled()) {
                 featuresThatForcePreReleaseBinaries += feature
             }
         }
 
+        if (!samConversionsExplicitlyPassed && this[LanguageFeature.NewInference] == LanguageFeature.State.ENABLED) {
+            put(LanguageFeature.SamConversionForKotlinFunctions, LanguageFeature.State.ENABLED)
+        }
+
         if (featuresThatForcePreReleaseBinaries.isNotEmpty()) {
             collector.report(
                 CompilerMessageSeverity.STRONG_WARNING,