[PM-6818] legacy generator service adapter (#8582)

* introduce legacy generators
* introduce generator navigation service
* Introduce default options. These accept a userId so that they can be policy-defined
* replace `GeneratorOptions` with backwards compatible `GeneratorNavigation`

libs/common/src/tools/generator/passphrase/passphrase-generator-strategy.spec.ts

@@ -2,7 +2,6 @@
  * include structuredClone in test environment.
  * @jest-environment ../../../../shared/test.environment.ts
  */
-
 import { mock } from "jest-mock-extended";
 import { of, firstValueFrom } from "rxjs";
 
@@ -12,12 +11,16 @@ import { PolicyType } from "../../../admin-console/enums";
 import { Policy } from "../../../admin-console/models/domain/policy";
 import { StateProvider } from "../../../platform/state";
 import { UserId } from "../../../types/guid";
+import { PasswordGenerationServiceAbstraction } from "../abstractions/password-generation.service.abstraction";
 import { PASSPHRASE_SETTINGS } from "../key-definitions";
-import { PasswordGenerationServiceAbstraction } from "../password/password-generation.service.abstraction";
 
 import { DisabledPassphraseGeneratorPolicy } from "./passphrase-generator-policy";
 
-import { PassphraseGeneratorOptionsEvaluator, PassphraseGeneratorStrategy } from ".";
+import {
+  DefaultPassphraseGenerationOptions,
+  PassphraseGeneratorOptionsEvaluator,
+  PassphraseGeneratorStrategy,
+} from ".";
 
 const SomeUser = "some user" as UserId;
 
@@ -71,6 +74,16 @@ describe("Password generation strategy", () => {
     });
   });
 
+  describe("defaults$", () => {
+    it("should return the default subaddress options", async () => {
+      const strategy = new PassphraseGeneratorStrategy(null, null);
+
+      const result = await firstValueFrom(strategy.defaults$(SomeUser));
+
+      expect(result).toEqual(DefaultPassphraseGenerationOptions);
+    });
+  });
+
   describe("cache_ms", () => {
     it("should be a positive non-zero number", () => {
       const legacy = mock<PasswordGenerationServiceAbstraction>();