KT-3563 Compiler requiring java.io.File, and it's unclear why

#KT-3563 fixed

compiler/testData/diagnostics/tests/extensions/kt3563.kt

@@ -0,0 +1,17 @@
+// KT-3563 Compiler requiring java.io.File, and it's unclear why
+
+package bar
+
+import java.io.File
+
+class Customer(name: String)
+
+fun foo(f: File, c: Customer) {
+    f.name
+
+    c.<!UNRESOLVED_REFERENCE!>name<!> // name should be unresolved here
+}
+
+//from standard library
+val File.name: String
+    get() = getName()