FE KT-47939 callable references to functional interface constructors

Allow callable references to Kotlin 'fun interface' constructors.
Prohibit callable references to Java SAM interface constructors.

compiler/testData/diagnostics/tests/funInterface/funInterfaceConstructorReferences_after.kt

@@ -0,0 +1,10 @@
+// FIR_IDENTICAL
+// !LANGUAGE: +AllowKotlinFunInterfaceConstructorReference +ProhibitJavaSamInterfaceConstructorReference
+
+fun interface Foo {
+    fun run()
+}
+
+val x = ::Foo
+val y = Foo { }
+val z = ::<!JAVA_SAM_INTERFACE_CONSTRUCTOR_REFERENCE!>Runnable<!>