ng update to 9.0 leaves ModuleMapLoader in app.server.ts

[vikerman]

Bug Report

After updating a 8.x @nguniveral/express-engine app to 9.0.0-next.3, I get the following error when trying to run the application:

NullInjectorError: R3InjectorError[router_RouterModule -> router_Router -> NgModuleFactoryLoader -> InjectionToken MODULE_MAP -> InjectionToken MODULE_MAP -> InjectionToken MODULE_MAP]:
NullInjectorError: No provider for InjectionToken MODULE_MAP!
at NullInjector.get (/home/viks/test/ng8x/dist/server/main.js:77347:27)
at R3Injector.get (/home/viks/test/ng8x/dist/server/main.js:91746:33)
at R3Injector.get (/home/viks/test/ng8x/dist/server/main.js:91746:33)
at R3Injector.get (/home/viks/test/ng8x/dist/server/main.js:91746:33)
at injectInjectorOnly (/home/viks/test/ng8x/dist/server/main.js:77226:33)
at Module.ɵɵinject (/home/viks/test/ng8x/dist/server/main.js:77236:57)
at Object.ModuleMapNgFactoryLoader_Factory [as factory] (/home/viks/test/ng8x/dist/server/main.js:183:409)
at R3Injector.hydrate (/home/viks/test/ng8x/dist/server/main.js:91972:63)
at R3Injector.get (/home/viks/test/ng8x/dist/server/main.js:91734:33)
at injectInjectorOnly (/home/viks/test/ng8x/dist/server/main.js:77226:33)

What is the expected behavior?

No Exception

What is the current behavior?

Exception thrown

What modules are related to this issue?

- [ ] aspnetcore-engine
- [x] common
- [x] express-engine
- [x] hapi-engine
- [ ] module-map-ngfactory-loader

The update schematics should remove the ModuleMapLoader from app.server.ts (and optionally provideModuleMap from main.server.ts)

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