Specify backendFacade for FIR codegen tests

JetBrains/kotlin@517979c

Author: rickclephas

kmp-nativecoroutines-compiler/src/test/kotlin/com/rickclephas/kmp/nativecoroutines/compiler/runners/AbstractFirBaseCodegenTest.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.test.backend.handlers.IrPrettyKotlinDumpHandler
 import org.jetbrains.kotlin.test.backend.ir.IrBackendInput
 import org.jetbrains.kotlin.test.backend.ir.IrConstCheckerHandler
 import org.jetbrains.kotlin.test.backend.ir.IrDiagnosticsHandler
+import org.jetbrains.kotlin.test.backend.ir.JvmIrBackendFacade
 import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
 import org.jetbrains.kotlin.test.builders.configureFirHandlersStep
 import org.jetbrains.kotlin.test.builders.configureIrHandlersStep
@@ -59,6 +60,8 @@ abstract class AbstractFirBaseCodegenTest(
         get() = ::FirFrontendFacade
     final override val frontendToBackendConverter: Constructor<Frontend2BackendConverter<FirOutputArtifact, IrBackendInput>>
         get() = ::Fir2IrResultsConverter
+    final override val backendFacade: Constructor<BackendFacade<IrBackendInput, BinaryArtifacts.Jvm>>
+        get() = ::JvmIrBackendFacade
 
     override fun configure(builder: TestConfigurationBuilder) = with(builder) {
         super.configure(builder)