Supported case when explicit function type is used

idea/testData/refactoring/inline/function/expressionBody/ExplicitReturnType.kt

@@ -0,0 +1,6 @@
+fun <caret>f(): List<String> = emptyList()
+
+fun main(args: Array<String>) {
+    val list1 = f()
+    val list2: List<String> = f()
+}

idea/testData/refactoring/inline/function/expressionBody/ExplicitReturnType.kt.after

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val list1 = emptyList<String>()
+    val list2: List<String> = emptyList()
+}