API Platform json_login with separate domain SPA

.env

APP_COOKIE_DOMAIN=.example.test
CORS_ALLOW_ORIGIN=^https?://app.example.test(:[0-9]+)?$

config-packages-framework.yaml

# config/packages/framework.yaml
framework:
    session:
        handler_id: null
        cookie_domain: '%env(APP_COOKIE_DOMAIN)%'
        cookie_secure: auto
        cookie_samesite: lax

config-packages-nelmio_cors.yaml

# config/packages/nelmio_cors.yaml
nelmio_cors:
    defaults:
        allow_credentials: true #set to true
        origin_regex: true
        allow_origin: ['%env(CORS_ALLOW_ORIGIN)%']
        allow_methods: ['GET', 'OPTIONS', 'POST', 'PUT', 'PATCH', 'DELETE']
        allow_headers: ['Content-Type', 'Authorization', 'Access-Control-Allow-Credentials', 'X-Auth-Token']
        expose_headers: ['Link']
        max_age: 3600
    paths:
        '^/': null