Clerk core v2 - Clerk fails to load under cypress iframe - "Browser unauthenticated" #3369

{
    "errors": [
        {
            "message": "Browser unauthenticated",
            "long_message": "Unable to authenticate this browser for your development instance. Check your Clerk cookies and try again. If the issue persists reach out to support@clerk.com.",
            "code": "dev_browser_unauthenticated"
        }
    ],
    "clerk_trace_id": "7d1c50d0956fd9d3fcf0e724ee113c37"
}

    "@clerk/clerk-sdk-node": "5.0.0",
    "@clerk/nextjs": "5.0.1",
    "@clerk/themes": "2.0.0",
    "next": "14.2.2",

Uncaught (in promise) Error: ClerkJS: Something went wrong initializing Clerk.
    at o (VM2800 clerk.browser.js:2:73614)
    at $e.<anonymous> (VM2800 clerk.browser.js:2:223897)
    at async $e.load (VM2800 clerk.browser.js:2:202798)
    at async _IsomorphicClerk.loadClerkJS (VM2822 node_modules_@clerk_clerk-react_dist_51047c._.js:1728:17)

Cypress.Commands.add(`signIn`, () => {
  cy.log(`Signing in.`);
  cy.setCookie(languageUtils.languageCookieKey, 'he');
  cy.visit('/');

  cy.window().should((win) => {
    expect(win).to.not.have.property(`Clerk`, undefined);
    expect(win.Clerk?.loaded).to.eq(true);
  });
  cy.window().then((win) => {
    cy.clearCookies({ domain: win.location.host });
    cy.log(`Clear cookies.`);
  });
  cy.window().then(async (win) => {
    cy.log(`Creating user.`);
    await win.Clerk.signOut();
    const res = await win.Clerk.client?.signIn.create({
      identifier: 'clerk_test@example.com',
      password: 'asdqwe123',
    });
    cy.log(`Signing in.`);
    await win.Clerk?.setActive?.({
      session: res?.createdSessionId,
    });
    cy.log(`Finished Signing in.`);
  });
});