[JS IR] Change global map in context to mapping

^KT-46204 fixed

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/JsMapping.kt

@@ -35,6 +35,8 @@ class JsMapping(val state: JsMappingState) : DefaultMapping(state) {
     val enumConstructorOldToNewValueParameters = state.newDeclarationToDeclarationMapping<IrValueDeclaration, IrValueParameter>()
     val enumEntryToCorrespondingField = state.newDeclarationToDeclarationMapping<IrEnumEntry, IrField>()
     val enumClassToInitEntryInstancesFun = state.newDeclarationToDeclarationMapping<IrClass, IrSimpleFunction>()
+
+    val suspendArityStore = state.newDeclarationToDeclarationCollectionMapping<IrClass, Collection<IrSimpleFunction>>()
 }