refactor: Servlet Filter에서의 MDC 제거 로직 변경

src/main/kotlin/roomescape/common/log/HttpRequestLoggingFilter.kt

@@ -9,6 +9,7 @@ import org.slf4j.MDC
 import org.springframework.web.filter.OncePerRequestFilter
 import org.springframework.web.util.ContentCachingRequestWrapper
 import org.springframework.web.util.ContentCachingResponseWrapper
+import roomescape.common.util.MdcPrincipalId
 
 private val log: KLogger = KotlinLogging.logger {}
 
@@ -33,7 +34,7 @@ class HttpRequestLoggingFilter(
             cachedResponse.copyBodyToResponse()
         } finally {
             MDC.remove("startTime")
-            MDC.remove("member_id")
+            MdcPrincipalId.clear()
         }
     }
 }