fix(tco): [123456789] read role policy is nil (#3031)

* fix read role policy is nil

* add changelog

* update

---------

Co-authored-by: mikatong <mikatong@tencent.com>

Author: tongyiming

.changelog/3031.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_identity_center_role_configuration_permission_custom_policy_attachment: fix code panic
+```

tencentcloud/services/tco/resource_tc_identity_center_role_configuration_permission_custom_policy_attachment.go

@@ -171,6 +171,11 @@ func resourceTencentCloudIdentityCenterRoleConfigurationPermissionCustomPolicyAt
 			}
 		}
 
+		if rolePolicie == nil {
+			log.Printf("[WARN]%s resource `identity_center_role_configuration_permission_policy_attachment` [%s] not found, please check if it has been deleted.\n", logId, d.Id())
+			return fmt.Errorf("RolePolicy %s is not exist", d.Id())
+		}
+
 		if rolePolicie.RolePolicyName != nil {
 			_ = d.Set("role_policy_name", rolePolicie.RolePolicyName)
 		}