KT-11104 : quick fix "surround with null check"

idea/testData/quickfix/surroundWithNullCheck/unsafeCallInDeclaration.kt

@@ -0,0 +1,8 @@
+// "Surround with null check" "false"
+// ACTION: Add non-null asserted (!!) call
+// ACTION: Replace with safe (?.) call
+// ERROR: Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?
+
+fun foo(s: String?) {
+    val x = s<caret>.hashCode()
+}