[IR] Store manglers used for signature computation in IrBackendInput

We will need them in signature dump tests later.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/Fir2Ir.kt

@@ -82,9 +82,9 @@ internal fun PhaseContext.fir2Ir(
                             .putIfAbsent(CommonConfigurationKeys.EVALUATED_CONST_TRACKER, EvaluatedConstTracker.create()),
             ),
             IrGenerationExtension.getInstances(config.project),
-            signatureComposerCreator = null,
+            signatureComposer = DescriptorSignatureComposerStub(KonanManglerDesc),
             irMangler = KonanManglerIr,
-            firManglerCreator = { FirNativeKotlinMangler() },
+            firMangler = FirNativeKotlinMangler(),
             visibilityConverter = Fir2IrVisibilityConverter.Default,
             diagnosticReporter = diagnosticsReporter,
             kotlinBuiltIns = builtInsModule ?: DefaultBuiltIns.Instance,

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/serialization/KonanIdSignaturer.kt

@@ -8,7 +8,7 @@ import org.jetbrains.kotlin.ir.util.IdSignature
 import org.jetbrains.kotlin.ir.util.KotlinMangler
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
 
-class KonanIdSignaturer(private val mangler: KotlinMangler.DescriptorMangler) : IdSignatureDescriptor(mangler) {
+class KonanIdSignaturer(mangler: KotlinMangler.DescriptorMangler) : IdSignatureDescriptor(mangler) {
 
     override fun createSignatureBuilder(type: SpecialDeclarationType): DescriptorBasedSignatureBuilder =
             KonanDescriptorBasedSignatureBuilder(type)
@@ -60,4 +60,4 @@ class KonanIdSignaturer(private val mangler: KotlinMangler.DescriptorMangler) :
             markInteropDeclaration(descriptor)
         }
     }
-}
+}