Fix cache initialization race condition for OAuth - #197

test get_remaining_attempts/2 returns correct remaining attempts for login (PhoenixKit.Users.RateLimiterTest)

test get_remaining_attempts/2 returns correct remaining attempts for magic link (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 normalizes email addresses (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 blocks requests after exceeding rate limit (PhoenixKit.Users.RateLimiterTest)

test reset_rate_limit/2 resets rate limit for login (PhoenixKit.Users.RateLimiterTest)

test check_magic_link_rate_limit/1 blocks requests after exceeding rate limit (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 rate limits are per-email (PhoenixKit.Users.RateLimiterTest)

test check_password_reset_rate_limit/1 allows requests within rate limit (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 allows requests within rate limit (PhoenixKit.Users.RateLimiterTest)

test check_registration_rate_limit/2 blocks requests after exceeding rate limit (PhoenixKit.Users.RateLimiterTest)

test reset_rate_limit/2 resets rate limit for magic link (PhoenixKit.Users.RateLimiterTest)

test check_password_reset_rate_limit/1 allows requests within rate limit (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 allows requests within rate limit (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 includes IP-based rate limiting when IP provided (PhoenixKit.Users.RateLimiterTest)

test check_registration_rate_limit/2 IP-based rate limiting is independent of email (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 normalizes email addresses (PhoenixKit.Users.RateLimiterTest)

test check_registration_rate_limit/2 includes IP-based rate limiting when IP provided (PhoenixKit.Users.RateLimiterTest)

test get_remaining_attempts/2 returns correct remaining attempts for magic link (PhoenixKit.Users.RateLimiterTest)

test check_login_rate_limit/2 blocks requests after exceeding rate limit (PhoenixKit.Users.RateLimiterTest)