Introduce FIR_IDENTICAL for FIR vs old frontend tests #KT-36879 Fixed

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromOuterClassInObjectLiteral.fir.kt

@@ -1,15 +0,0 @@
-class A<T> {
-    fun foo() {
-        val q = object {
-            open inner class B
-            inner class C : B()
-
-            // No WRONG_NUMBER_OF_TYPE_ARGUMENTS should be reported on these types
-            val x: B = B()
-            val y: C = C()
-        }
-
-        q.x
-        q.y
-    }
-}

compiler/testData/diagnostics/tests/generics/innerClasses/implicitArguments/fromOuterClassInObjectLiteral.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class A<T> {
     fun foo() {
         val q = object {