[FE 1.0] Check callable reference return type safety during resolution

^KT-51844
^KT-52503 Fixed

compiler/testData/diagnostics/tests/callableReference/kt52503.kt

@@ -0,0 +1,16 @@
+// FIR_IDENTICAL
+// WITH_STDLIB
+
+abstract class Foo
+
+object A {
+    fun Foo.contains(vararg xs: Int) = // 1
+        xs.forEach(this::<!EXTENSION_IN_CLASS_REFERENCE_NOT_ALLOWED!>contains<!>) // resolved to (2) in 1.7.0-RC, should be error "Type checking has run into a recursive problem"
+}
+
+fun Any.contains(vararg xs: Int) {} // 2
+
+fun box(): String {
+    object : Foo() {}.contains(1)
+    return "OK"
+}

compiler/testData/diagnostics/tests/callableReference/kt52503.txt

@@ -0,0 +1,19 @@
+package
+
+public fun box(): kotlin.String
+public fun kotlin.Any.contains(/*0*/ vararg xs: kotlin.Int /*kotlin.IntArray*/): kotlin.Unit
+
+public object A {
+    private constructor A()
+    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 open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public final fun Foo.contains(/*0*/ vararg xs: kotlin.Int /*kotlin.IntArray*/): kotlin.Unit
+}
+
+public abstract class Foo {
+    public constructor 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 open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/platformTypes/kt50877.fir.kt

@@ -1,31 +0,0 @@
-// FULL_JDK
-// WITH_STDLIB
-
-// FILE: Schematic.kt
-class Schematic {
-    var name: String? = null
-
-    var error: String? = null
-
-    override fun toString(): String {
-        return name!!
-    }
-}
-
-// FILE: SortedListModel.java
-import java.util.Comparator;
-
-public class SortedListModel<T> {
-    public SortedListModel(Comparator<? super T> comparator) {
-    }
-}
-
-
-// FILE: main.kt
-val model = SortedListModel<Schematic>(Comparator.comparing { b1: Schematic ->
-    when {
-        b1.error != null -> 2
-        b1.name!!.contains(":") -> 1
-        else -> 0
-    }
-}.thenComparing { b1: Schematic -> b1.name!! })

compiler/testData/diagnostics/tests/platformTypes/kt50877.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FULL_JDK
 // WITH_STDLIB