Fix bug in `parseInternalErrorCode` where some error codes are never reached (#6226)

CHANGES.md

@@ -70,6 +70,7 @@ Release Notes.
 * Log collecting and query implementation
 * Support Alarm to feishu
 * Add the implementation of ConfigurationDiscovery on the OAP side.
+* Fix bug in `parseInternalErrorCode` where some error codes are never reached.
 
 #### UI
 * Fix un-removed tags in trace query.

oap-server/server-receiver-plugin/envoy-metrics-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/envoy/als/LogEntry2MetricsAdapter.java

@@ -202,7 +202,7 @@ public class LogEntry2MetricsAdapter {
                 return "fault_injected";
             } else if (responseFlags.getRateLimited()) {
                 return "rate_limited";
-            } else if (responseFlags.getUnauthorizedDetails() != null) {
+            } else if (responseFlags.hasUnauthorizedDetails()) {
                 return "unauthorized_details";
             } else if (responseFlags.getRateLimitServiceError()) {
                 return "rate_limit_service_error";