[Test] Use special test facade for IR actualization and IR plugins in all codegen configurations

Previously application of plugins was part of fir2ir conversion and
  ir actualization was the responsibility of each specific IR backend
  facade. Now (after moving IR extensions after IR actualization) those
  actions are extracted into separate facade for two purposes:
1. Avoid code duplication in backend facades
2. Step with this facade goes exactly after fir2ir conversion before
   irHandlersStep, which allows IR handlers to observe IR which was
   actualized and modified by extensions, which is quite useful

^KT-56173

wasm/wasm.tests/test/org/jetbrains/kotlin/wasm/test/AbstractWasmBlackBoxCodegenTestBase.kt

@@ -19,9 +19,9 @@ import org.jetbrains.kotlin.test.frontend.classic.handlers.ClassicDiagnosticsHan
 import org.jetbrains.kotlin.test.frontend.fir.handlers.FirDiagnosticsHandler
 import org.jetbrains.kotlin.test.model.*
 import org.jetbrains.kotlin.test.runners.AbstractKotlinCompilerWithTargetBackendTest
+import org.jetbrains.kotlin.test.runners.codegen.actualizersAndPluginsFacadeStepIfNeeded
 import org.jetbrains.kotlin.test.runners.codegen.commonClassicFrontendHandlersForCodegenTest
 import org.jetbrains.kotlin.test.services.LibraryProvider
-import org.jetbrains.kotlin.test.services.configuration.CommonEnvironmentConfigurator
 import org.jetbrains.kotlin.test.services.configuration.WasmEnvironmentConfigurator
 import org.jetbrains.kotlin.test.services.sourceProviders.CoroutineHelpersSourceFilesProvider
 import org.jetbrains.kotlin.wasm.test.handlers.WasmBoxRunner
@@ -90,7 +90,7 @@ abstract class AbstractWasmBlackBoxCodegenTestBase<R : ResultingArtifact.Fronten
 
         facadeStep(frontendToBackendConverter)
         irHandlersStep()
-
+        actualizersAndPluginsFacadeStepIfNeeded(targetFrontend)
         facadeStep(backendFacade)
         klibArtifactsHandlersStep()
         facadeStep(afterBackendFacade)

wasm/wasm.tests/test/org/jetbrains/kotlin/wasm/test/converters/FirWasmKlibBackendFacade.kt

@@ -6,31 +6,24 @@
 package org.jetbrains.kotlin.wasm.test.converters
 
 import org.jetbrains.kotlin.backend.common.CommonKLibResolver
-import org.jetbrains.kotlin.backend.common.actualizer.IrActualizer
 import org.jetbrains.kotlin.config.CommonConfigurationKeys
-import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
-import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
-import org.jetbrains.kotlin.fir.pipeline.applyIrGenerationExtensions
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.ir.backend.js.JsFactories
 import org.jetbrains.kotlin.ir.backend.js.resolverLogger
 import org.jetbrains.kotlin.ir.backend.js.serializeModuleIntoKlib
-import org.jetbrains.kotlin.ir.types.IrTypeSystemContextImpl
 import org.jetbrains.kotlin.ir.util.IrMessageLogger
 import org.jetbrains.kotlin.library.KotlinAbiVersion
 import org.jetbrains.kotlin.storage.LockBasedStorageManager
 import org.jetbrains.kotlin.test.backend.ir.IrBackendFacade
 import org.jetbrains.kotlin.test.backend.ir.IrBackendInput
-import org.jetbrains.kotlin.test.backend.ir.irGenerationExtensions
 import org.jetbrains.kotlin.test.frontend.classic.ModuleDescriptorProvider
 import org.jetbrains.kotlin.test.frontend.classic.moduleDescriptorProvider
 import org.jetbrains.kotlin.test.frontend.fir.getAllWasmDependenciesPaths
 import org.jetbrains.kotlin.test.frontend.fir.resolveLibraries
 import org.jetbrains.kotlin.test.model.ArtifactKinds
 import org.jetbrains.kotlin.test.model.BinaryArtifacts
-import org.jetbrains.kotlin.test.model.FrontendKinds
 import org.jetbrains.kotlin.test.model.TestModule
 import org.jetbrains.kotlin.test.services.*
 import org.jetbrains.kotlin.test.services.configuration.WasmEnvironmentConfigurator
@@ -61,28 +54,7 @@ class FirWasmKlibBackendFacade(
         // TODO: consider avoiding repeated libraries resolution
         val libraries = resolveLibraries(configuration, getAllWasmDependenciesPaths(module, testServices))
 
-        // TODO: find out how to pass diagnostics to the test infra in this case
-        val diagnosticReporter = DiagnosticReporterFactory.createReporter()
-
         if (firstTimeCompilation) {
-            val irActualizedResult =
-                if (module.frontendKind == FrontendKinds.FIR && module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)) {
-                    IrActualizer.actualize(
-                        inputArtifact.irModuleFragment,
-                        inputArtifact.dependentIrModuleFragments,
-                        diagnosticReporter,
-                        IrTypeSystemContextImpl(inputArtifact.irModuleFragment.irBuiltins),
-                        configuration.languageVersionSettings
-                    ).also {
-                        inputArtifact.irPluginContext.applyIrGenerationExtensions(
-                            inputArtifact.irModuleFragment,
-                            irGenerationExtensions = module.irGenerationExtensions(testServices)
-                        )
-                    }
-                } else {
-                    null
-                }
-
             serializeModuleIntoKlib(
                 configuration[CommonConfigurationKeys.MODULE_NAME]!!,
                 configuration,
@@ -99,7 +71,7 @@ class FirWasmKlibBackendFacade(
                 abiVersion = KotlinAbiVersion.CURRENT, // TODO get from test file data
                 jsOutputName = null
             ) {
-                inputArtifact.serializeSingleFile(it, irActualizedResult)
+                inputArtifact.serializeSingleFile(it, inputArtifact.irActualizerResult)
             }
         }