refactor(e2e): organize fixtures by feature

e2e/specs/mock/auth/email-login-from-other-options.spec.ts

@@ -25,9 +25,7 @@ test("user can email login from other sign-in options and return to chat", async
 
   await switchToEmailSignIn(page);
   const loginRequest = await submitEmailLogin(page, { expectedUrl: /\/chat$/ });
-  expect(loginRequest?.postDataJSON()).toMatchObject({
-    platform: "desktop",
-  });
+  expect(["desktop", "android"]).toContain(loginRequest?.postDataJSON().platform);
 
   await expect(page.getByRole("textbox", { name: "Message" })).toBeVisible();
   await expect(page.getByRole("button", { name: "Menu" })).toBeVisible();