ember-fecth does not work in my consumer app with Fastboot enabled, when I put ember-fetch as dependencies in my addon

cosumer app - https://github.com/villander/ember-mvp
addon - https://github.com/villander/ember-apollo-client/blob/apollo-client-2.0/package.json#L34

looks like ember-fetch specifically doesn’t work with fastboot when it’s a nested dependency
because its updateFastBootManifest() method is never called

the question is what happens when you wind up calling that hook multiple times?
like if ember-mvp and ember-apollo-client both have ember-fetch installed, does it get called twice?

is it ember-fetch’s responsibility to guard against that?