Fix initializers loading

[ChengaDev]

Initializers are not loaded correctly since the initializers are assigned to the app context like that:

  context.update(setters.initializers, {
    initializers: { initializers: inits, props },
  })

and being loaded like that:

  const store = context.store()
  const initializers = store.initializers

had to be loaded like that:

  const store = context.store()
  const initializers = store.initializers?.initializers