[IR] Introduce API to register generated IR declaration to be present in metatada

KT-63881

plugins/fir-plugin-prototype/src/org/jetbrains/kotlin/ir/plugin/AllPropertiesConstructorIrGenerator.kt

@@ -84,6 +84,7 @@ class AllPropertiesConstructorIrGenerator(val context: IrPluginContext) : IrElem
                     }
                 )
             )
+            context.metadataDeclarationRegistrar.registerConstructorAsMetadataVisible(ctor)
         }
     }