Add FIR_IDENTICAL to some tests

compiler/testData/diagnostics/testsWithStdLib/coroutines/allowNullOperatorsForResult_1_3.fir.kt

@@ -1,7 +0,0 @@
-// !LANGUAGE: -AllowNullOperatorsForResult
-// !DIAGNOSTICS: -UNUSED_EXPRESSION
-
-fun test(r: Result<Int>?) {
-    r ?: 0
-    r?.isFailure
-}

compiler/testData/diagnostics/testsWithStdLib/coroutines/allowNullOperatorsForResult_1_3.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !LANGUAGE: -AllowNullOperatorsForResult
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 

compiler/testData/diagnostics/testsWithStdLib/coroutines/allowResultInReturnType_1_3.fir.kt

@@ -1,4 +0,0 @@
-// !LANGUAGE: +InlineClasses -AllowResultInReturnType
-
-fun result(): Result<Int> = TODO()
-val resultP: Result<Int> = result()

compiler/testData/diagnostics/testsWithStdLib/coroutines/allowResultInReturnType_1_3.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !LANGUAGE: +InlineClasses -AllowResultInReturnType
 
 fun result(): Result<Int> = TODO()

compiler/testData/diagnostics/testsWithStdLib/coroutines/usageOfResultTypeWithNullableOperators.fir.kt

@@ -1,40 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_EXPRESSION
-// !LANGUAGE: -AllowNullOperatorsForResult -AllowResultInReturnType
-
-fun <T> id(x: T): T = x
-
-private val asFun: () -> Result<Int>? = TODO()
-private val Int.intResult: Result<Int>?
-    get() = null
-
-fun returnInt(): Int? = 0
-
-
-fun nullableOperators(r1: Result<Int>?, b: Boolean) {
-    if (b) {
-        r1!!
-        asFun()!!
-        returnInt()?.intResult!!.toString()
-    }
-
-    if (b) {
-        id(r1)!!
-    }
-
-    if (b) {
-        r1?.toString()
-        r1?.let { }
-        returnInt()?.intResult?.toString()
-        asFun()?.toString()
-        id(r1)?.toString()
-    }
-
-    if (b) {
-        r1 ?: 0
-        r1 ?: r1
-        asFun() ?: r1 ?: 0
-        id(asFun()) ?: 0
-
-        returnInt() ?: returnInt() ?: asFun() ?: 0
-    }
-}

compiler/testData/diagnostics/testsWithStdLib/coroutines/usageOfResultTypeWithNullableOperators.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 // !LANGUAGE: -AllowNullOperatorsForResult -AllowResultInReturnType