feat(auth): 重构FormIdentityLoginConfigurer的handler依赖结构

- 将SsoLogoutSuccessHandler移动到common-security模块中统一管理
- 使用TenantSavedRequestAwareAuthenticationSuccessHandler替代原有success handler
- 保持FormAuthenticationFailureHandler作为默认failure handler

pigx-auth/src/main/java/com/pig4cloud/pigx/auth/support/core/FormIdentityLoginConfigurer.java

@@ -1,8 +1,8 @@
 package com.pig4cloud.pigx.auth.support.core;
 
 import com.pig4cloud.pigx.auth.support.handler.FormAuthenticationFailureHandler;
-import com.pig4cloud.pigx.auth.support.handler.SsoLogoutSuccessHandler;
 import com.pig4cloud.pigx.auth.support.handler.TenantSavedRequestAwareAuthenticationSuccessHandler;
+import com.pig4cloud.pigx.common.security.handler.SsoLogoutSuccessHandler;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;