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<!>

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

@@ -1,3 +1,6 @@
+// FIR_IDENTICAL
+// !LANGUAGE: -AllowKotlinFunInterfaceConstructorReference -ProhibitJavaSamInterfaceConstructorReference
+
 fun interface Foo {
     fun run()
 }

compiler/testData/diagnostics/tests/funInterface/funInterfaceConstructorReferences_before.txt

@@ -0,0 +1,12 @@
+package
+
+public val x: kotlin.reflect.KFunction1<() -> kotlin.Unit, Foo>
+public val y: Foo
+public val z: kotlin.reflect.KFunction1<() -> kotlin.Unit, java.lang.Runnable>
+
+public fun interface Foo {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public abstract fun run(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/funInterface/prohibitFunInterfaceConstructorReferences.fir.kt

@@ -1,7 +0,0 @@
-fun interface Foo {
-    fun run()
-}
-
-val x = ::<!FUN_INTERFACE_CONSTRUCTOR_REFERENCE!>Foo<!>
-val y = Foo { }
-val z = ::<!FUN_INTERFACE_CONSTRUCTOR_REFERENCE!>Runnable<!>