[FE] Change message for sealed interfaces with language target < 1.5

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/SealedInterfaceAllowedChecker.kt

@@ -18,6 +18,6 @@ object SealedInterfaceAllowedChecker : DeclarationChecker {
         if (descriptor !is ClassDescriptor) return
         if (descriptor.kind != ClassKind.INTERFACE) return
         val keyword = declaration.modifierList?.getModifier(KtTokens.SEALED_KEYWORD) ?: return
-        context.trace.report(Errors.WRONG_MODIFIER_TARGET.on(keyword, KtTokens.SEALED_KEYWORD, KotlinTarget.INTERFACE.description))
+        context.trace.report(Errors.UNSUPPORTED_FEATURE.on(keyword, LanguageFeature.SealedInterfaces to context.languageVersionSettings))
     }
 }

compiler/testData/cli/jvm/internalArgDisableLanguageFeature.out

@@ -7,7 +7,7 @@ This mode is not recommended for production use,
 as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!
 
-compiler/testData/cli/jvm/internalArgDisableLanguageFeature.kt:1:1: error: modifier 'sealed' is not applicable to 'interface'
+compiler/testData/cli/jvm/internalArgDisableLanguageFeature.kt:1:1: error: the feature "sealed interfaces" is disabled
 sealed interface A
 ^
 COMPILATION_ERROR

compiler/testData/diagnostics/tests/sealed/interfaces/sealedInterfacesDisabled.kt

@@ -2,4 +2,4 @@
 // !LANGUAGE: -SealedInterfaces
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 
-<!WRONG_MODIFIER_TARGET!>sealed<!> interface Base
+<!UNSUPPORTED_FEATURE!>sealed<!> interface Base