replace 'trait' keyword with 'interface' in user-visible messages and code generation tools

compiler/testData/loadJava/compiledKotlin/annotations/MultiDimensionalArrayMethod.txt

@@ -6,7 +6,7 @@ internal final annotation class Anno : kotlin.Annotation {
         internal final fun <get-s>(): kotlin.String
 }
 
-internal trait T {
+internal interface T {
     test.Anno(s = "bar": kotlin.String) internal abstract val bar: kotlin.Array<kotlin.Array<kotlin.BooleanArray>>
         internal abstract fun <get-bar>(): kotlin.Array<kotlin.Array<kotlin.BooleanArray>>
     test.Anno(s = "foo": kotlin.String) internal abstract fun foo(): kotlin.Array<kotlin.Array<kotlin.Array<test.T>>>

compiler/testData/loadJava/compiledKotlin/annotations/parameters/FunctionInTrait.txt

@@ -4,6 +4,6 @@ internal final annotation class Anno : kotlin.Annotation {
     /*primary*/ public constructor Anno()
 }
 
-internal trait Trait {
+internal interface Trait {
     internal open fun foo(/*0*/ test.Anno() x: kotlin.String): kotlin.Int
 }

compiler/testData/loadJava/compiledKotlin/annotations/propertiesWithoutBackingFields/NestedTrait.txt

@@ -7,7 +7,7 @@ internal final annotation class Anno : kotlin.Annotation {
 internal final class Class {
     /*primary*/ public constructor Class()
 
-    internal trait Trait {
+    internal interface Trait {
         test.Anno() internal abstract val property: kotlin.Int
             internal abstract fun <get-property>(): kotlin.Int
     }

compiler/testData/loadJava/compiledKotlin/annotations/propertiesWithoutBackingFields/Trait.txt

@@ -4,7 +4,7 @@ internal final annotation class Anno : kotlin.Annotation {
     /*primary*/ public constructor Anno()
 }
 
-internal trait Trait {
+internal interface Trait {
     test.Anno() internal abstract val property: kotlin.Int
         internal abstract fun <get-property>(): kotlin.Int
 }

compiler/testData/loadJava/compiledKotlin/annotations/propertiesWithoutBackingFields/TraitClassObject.txt

@@ -4,7 +4,7 @@ internal final annotation class Anno : kotlin.Annotation {
     /*primary*/ public constructor Anno()
 }
 
-internal trait Trait {
+internal interface Trait {
 
     internal companion object Companion {
         /*primary*/ private constructor Companion()