SmartPointers in Introduce Variable refactoring

It's often case, when psi can die after reparse, especially after
reformatting cases, SmartPointers are opposite to it, can survive

#KT-32601 Fixed

idea/testData/refactoring/introduceVariable/FromLambda.kt

@@ -0,0 +1,4 @@
+fun foo() {
+    val z = <selection>123</selection>
+    val x: (Int) -> Int = { 123}
+}

idea/testData/refactoring/introduceVariable/FromLambda.kt.after

@@ -0,0 +1,5 @@
+fun foo() {
+    val i = 123
+    val z = i
+    val x: (Int) -> Int = { i }
+}