Fix "Rewrite at slice LEXICAL_SCOPE" for callable references

For special calls (when-expressions, if-expressions, etc.), do not attempt to
get type of the argument expression, which is the block with the callable
reference, instead get type of the callable reference itself. The difference
matters because for block expressions, a new lexical scope is created for each
getTypeInfo (see ExpressionTypingServices.getBlockReturnedType), and we do not
support rewrites of this value in the binding trace

 #KT-12044 Fixed

compiler/testData/diagnostics/tests/callableReference/resolve/kt12338.kt

@@ -0,0 +1,9 @@
+// KT-12338 Compiler error ERROR: Rewrite at slice LEXICAL_SCOPE key: REFERENCE_EXPRESSION with when and function references
+
+fun a() { }
+
+fun test() {
+    when {
+        true -> <!UNUSED_EXPRESSION!>::a<!>
+    }
+}

compiler/testData/diagnostics/tests/callableReference/resolve/kt12338.txt

@@ -0,0 +1,4 @@
+package
+
+public fun a(): kotlin.Unit
+public fun test(): kotlin.Unit