Extract Function: Utilize pseudo-value usage for return type inference

idea/testData/refactoring/extractFunction/controlFlow/evaluateExpression/evalIfExpr.kt

@@ -0,0 +1,5 @@
+// SIBLING:
+fun foo(a: Int): Int {
+    val b: Int = 1
+    return <selection>if (a + b > 0) 1 else if (a - b < 0) 2 else b </selection>
+}