compiler testdata: s/trait/interface

compiler/testData/codegen/boxWithStdlib/callableReference/function/local/enumExtendsTrait.kt

@@ -1,4 +1,4 @@
-trait Named {
+interface Named {
     fun name(): String
 }
 

compiler/testData/codegen/boxWithStdlib/callableReference/function/traitImplMethodWithClassReceiver.kt

@@ -1,4 +1,4 @@
-trait T {
+interface T {
     fun foo() = "OK"
 }
 

compiler/testData/codegen/boxWithStdlib/callableReference/function/traitMember.kt

@@ -1,4 +1,4 @@
-trait A {
+interface A {
     fun foo(): String
 }