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

compiler/testData/diagnostics/tests/inference/substitutions/delegationAndInference.fir.kt

@@ -1,14 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-import kotlin.reflect.KProperty
-
-class A(val map: MutableMap<String, CharSequence>) {
-
-    var a: String by map.withDefault1 { "foo" }
-}
-
-operator fun <G> MutableMap<in String, in G>.getValue(thisRef: Any?, property: KProperty<*>): G = throw Exception()
-
-operator fun <S> MutableMap<in String, in S>.setValue(thisRef: Any?, property: KProperty<*>, value: S) {}
-
-fun <K, V> MutableMap<K, V>.withDefault1(default: (key: K) -> V): MutableMap<K, V> = this

compiler/testData/diagnostics/tests/inference/substitutions/delegationAndInference.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 import kotlin.reflect.KProperty

compiler/testData/diagnostics/tests/inference/substitutions/kt6081SubstituteIntoClassCorrectly.fir.kt

@@ -1,14 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-//KT-6081 Chained generic method calls: wrong type inference
-
-class Bar<T>
-
-fun <T> bar(): Bar<T> = null!!
-
-class Foo {
-    fun <R> add(bar: Bar<R>): Foo {return this}
-}
-
-fun doesNotWork(bi: Bar<Int>, bs: Bar<String>) {
-    Foo().add(bi).add(bs)
-}

compiler/testData/diagnostics/tests/inference/substitutions/kt6081SubstituteIntoClassCorrectly.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 //KT-6081 Chained generic method calls: wrong type inference