Extract Function: Allow to combine throws with other exit points

idea/testData/refactoring/extractFunction/controlFlow/throws/evalExpressionWithThrow.kt

@@ -0,0 +1,7 @@
+// NEXT_SIBLING:
+fun foo(a: Int): Int {
+    val b: Int = 1
+
+    val t = <selection>if (a > 0) throw Exception("") else a + b</selection>
+    return t
+}