fix(data): Angular 9 style ModuleWithProvider (#2356)

[debuggerpk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngrx/platform/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

NgRx Data does not compile with Angular 9. Gives error EntityDataModule.forRoot returns a ModuleWithProviders type without a generic type argument.

Closes #2356

What is the new behavior?

NgRx Data now compiles flawlessly with Angular 9.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[ngrxbot]

Preview docs changes for e85da6b at https://previews.ngrx.io/pr2357-e85da6b/

[brandonroberts]

Thanks @debuggerpk!

[debuggerpk]

@brandonroberts this is kinda a road blocker for angular 9 upgrade. Can we release it out in the wild?

[brandonroberts]

We'll cut another beta next week. If you need it earlier, use the nightly builds

https://ngrx.io/guide/nightlies