[NI] Don't use only platform specific checks for FIC in inference

compiler/testData/multiplatform/funInterfaces/common.kt

@@ -0,0 +1,15 @@
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+NewInference
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionForKotlinFunctions
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionPerArgument
+
+package common
+
+fun interface KRunnable {
+    fun invoke(): String
+}
+
+fun foo(k: KRunnable) = k.invoke()
+
+fun test() {
+    foo { "OK" }
+}

compiler/testData/multiplatform/funInterfaces/js.kt

@@ -0,0 +1,15 @@
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+NewInference
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionForKotlinFunctions
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionPerArgument
+
+package js
+
+fun interface KRunnable {
+    fun invoke(): String
+}
+
+fun foo(k: KRunnable) = k.invoke()
+
+fun test() {
+    foo { "OK" }
+}

compiler/testData/multiplatform/funInterfaces/jvm.kt

@@ -0,0 +1,15 @@
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+NewInference
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionForKotlinFunctions
+// ADDITIONAL_COMPILER_ARGUMENTS: -XXLanguage:+SamConversionPerArgument
+
+package jvm
+
+fun interface KRunnable {
+    fun invoke(): String
+}
+
+fun foo(k: KRunnable) = k.invoke()
+
+fun test() {
+    foo { "OK" }
+}

compiler/testData/multiplatform/funInterfaces/output.txt

@@ -0,0 +1,41 @@
+-- Common --
+Exit code: OK
+Output:
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+NewInference
+-XXLanguage:+SamConversionForKotlinFunctions
+-XXLanguage:+SamConversionPerArgument
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+-- JVM --
+Exit code: OK
+Output:
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+NewInference
+-XXLanguage:+SamConversionForKotlinFunctions
+-XXLanguage:+SamConversionPerArgument
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+-- JS --
+Exit code: OK
+Output:
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+NewInference
+-XXLanguage:+SamConversionForKotlinFunctions
+-XXLanguage:+SamConversionPerArgument
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!