[K/JS] Include jsFirEs6Test into jsFirCompilerTest tests

compiler/testData/codegen/boxInline/argumentOrder/defaultParametersAndLastVararg.kt

@@ -1,7 +1,7 @@
 // WITH_STDLIB
 // !LANGUAGE: -UseCorrectExecutionOrderForVarargArguments
 // IGNORE_BACKEND: JS
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, WASM
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, JS_IR_ES6, WASM
 // IGNORE_BACKEND_K2_MULTI_MODULE: JVM_IR JVM_IR_SERIALIZE
 // NO_CHECK_LAMBDA_INLINING
 // KJS_WITH_FULL_RUNTIME

compiler/testData/codegen/boxInline/nonLocalReturns/kt9304.kt

@@ -1,6 +1,6 @@
 // IGNORE_BACKEND: JVM
 // IGNORE_BACKEND_MULTI_MODULE: JVM, JVM_MULTI_MODULE_OLD_AGAINST_IR
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE, WASM
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, JS_IR_ES6, NATIVE, WASM
 // IGNORE_BACKEND_K2_MULTI_MODULE: JVM_IR JVM_IR_SERIALIZE
 // NO_CHECK_LAMBDA_INLINING
 // FILE: 1.kt

compiler/testData/codegen/boxInline/syntheticAccessors/superCall.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE, WASM
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, JS_IR_ES6, NATIVE, WASM
 // IGNORE_BACKEND_K2_MULTI_MODULE: JVM_IR JVM_IR_SERIALIZE NATIVE
 // !LANGUAGE: -ProhibitSuperCallsFromPublicInline
 // FILE: 1.kt

compiler/testData/codegen/boxInline/syntheticAccessors/superCallFromMultipleSubclasses.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE, WASM
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, JS_IR_ES6, NATIVE, WASM
 // IGNORE_BACKEND_K2_MULTI_MODULE: JVM_IR JVM_IR_SERIALIZE NATIVE
 // !LANGUAGE: -ProhibitSuperCallsFromPublicInline
 // FILE: 1.kt

compiler/testData/codegen/boxInline/syntheticAccessors/superProperty.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE, WASM
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, JS_IR_ES6, NATIVE, WASM
 // IGNORE_BACKEND_K2_MULTI_MODULE: JVM_IR JVM_IR_SERIALIZE NATIVE
 // !LANGUAGE: -ProhibitSuperCallsFromPublicInline
 // FILE: 1.kt