Resolve state <-> state-test-utils circular dependency (#16093)

* Resolve state <-> state-test-utils circular dependency

* Fix type errors

libs/state-internal/src/inline-derived-state.ts

@@ -0,0 +1,39 @@
+import { Observable, concatMap } from "rxjs";
+
+import {
+  DeriveDefinition,
+  DerivedState,
+  DerivedStateDependencies,
+  DerivedStateProvider,
+} from "@bitwarden/state";
+
+export class InlineDerivedStateProvider implements DerivedStateProvider {
+  get<TFrom, TTo, TDeps extends DerivedStateDependencies>(
+    parentState$: Observable<TFrom>,
+    deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
+    dependencies: TDeps,
+  ): DerivedState<TTo> {
+    return new InlineDerivedState(parentState$, deriveDefinition, dependencies);
+  }
+}
+
+export class InlineDerivedState<TFrom, TTo, TDeps extends DerivedStateDependencies>
+  implements DerivedState<TTo>
+{
+  constructor(
+    parentState$: Observable<TFrom>,
+    deriveDefinition: DeriveDefinition<TFrom, TTo, TDeps>,
+    dependencies: TDeps,
+  ) {
+    this.state$ = parentState$.pipe(
+      concatMap(async (value) => await deriveDefinition.derive(value, dependencies)),
+    );
+  }
+
+  state$: Observable<TTo>;
+
+  forceValue(value: TTo): Promise<TTo> {
+    // No need to force anything, we don't keep a cache
+    return Promise.resolve(value);
+  }
+}