fix(eslint-plugin): do not report non-array returns in no-multiple-actions-in-effects

[jsaguet]

…tions-in-effects

PR Checklist

Please check if your PR fulfills the following requirements:

• [ ] The commit message follows our guidelines: https://github.com/ngrx/platform/blob/main/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?

Eslint rules incorrectly reports an error for the rule no-multiple-actions-in-effects for the following code:

import { Actions, createEffect, ofType } from '@ngrx/effects';
import { createAction, props } from '@ngrx/store';
import { of, switchMap } from 'rxjs';

const foo = createAction('foo', props<{ payload: string }>());
const bar = createAction('bar');
const baz = createAction('baz');

@Injectable()
export class Effects {
  constructor(private actions$: Actions) {}
  effect$ = createEffect(() =>
      this.actions$.pipe(
          ofType(foo),
          switchMap(({ payload }: { payload: string }) => (payload === 'value' ? of(bar()) : of(baz()))),
      ),
  );
}

Closes #

What is the new behavior?

The eslint rule does not report an error on the valid code.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

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[markostanimirovic]

Thank you @jsaguet!