[IR] Rename IrAnnotationsFromPluginRegistrar to IrGeneratedDeclarationsRegistrar

In further commits, this service will be used not only for registering
  annotations, but newly generated IR declarations too

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

@@ -89,7 +89,7 @@ internal fun PhaseContext.firSerializerBase(
                         },
                         allowErrorTypes = false,
                         exportKDoc = shouldExportKDoc(),
-                        additionalAnnotationsProvider = fir2IrInput?.components?.annotationsFromPluginRegistrar?.createMetadataAnnotationsProvider()
+                        additionalMetadataProvider = fir2IrInput?.components?.annotationsFromPluginRegistrar?.createMetadataAnnotationsProvider()
                 ),
                 configuration.languageVersionSettings,
                 produceHeaderKlib,