Fix rewrite at slice exception for callable references inside flatMap

#KT-40254 Fixed

compiler/testData/diagnostics/tests/callableReference/resolve/resolveTwoReferencesAgainstGenerics.fir.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// WITH_RUNTIME
+
+
+fun <T> List<Option<T>>.flatten(): List<T> = <!AMBIGUITY!>flatMap<!> { <!UNRESOLVED_REFERENCE!>it<!>.<!INAPPLICABLE_CANDIDATE!>fold<!>(::emptyList, <!UNRESOLVED_REFERENCE!>::listOf<!>) }
+
+class Option<out T> {
+    fun <R> fold(ifEmpty: () -> R, ifSome: (T) -> R): R = TODO()
+}

compiler/testData/diagnostics/tests/callableReference/resolve/resolveTwoReferencesAgainstGenerics.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// WITH_RUNTIME
+
+
+fun <T> List<Option<T>>.flatten(): List<T> = flatMap { it.fold(::emptyList, ::listOf) }
+
+class Option<out T> {
+    fun <R> fold(ifEmpty: () -> R, ifSome: (T) -> R): R = TODO()
+}

compiler/testData/diagnostics/tests/callableReference/resolve/resolveTwoReferencesAgainstGenerics.txt

@@ -0,0 +1,11 @@
+package
+
+public fun </*0*/ T> kotlin.collections.List<Option<T>>.flatten(): kotlin.collections.List<T>
+
+public final class Option</*0*/ out T> {
+    public constructor Option</*0*/ out T>()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final fun </*0*/ R> fold(/*0*/ ifEmpty: () -> R, /*1*/ ifSome: (T) -> R): R
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}