Fix Can't rename implicit lambda parameter 'it' when caret is placed right after the last character

#KT-14401 Fixed

idea/testData/refactoring/rename/inplace/FunctionLiteralItEndCaret.kt

@@ -0,0 +1,3 @@
+fun f() {
+    val f: (Int) -> Int = { it<caret> + it }
+}

idea/testData/refactoring/rename/inplace/FunctionLiteralItEndCaret.kt.after

@@ -0,0 +1,3 @@
+fun f() {
+    val f: (Int) -> Int = { y -> y + y }
+}