fix: fix javaagent ratelimit pb method not found error (#605)

Author: peerless1024

polaris-ratelimit/polaris-ratelimit-api/src/main/java/com/tencent/polaris/ratelimit/api/rpc/QuotaResponse.java

@@ -68,6 +68,10 @@ public String getActiveRuleName() {
         return activeRuleName;
     }
 
+    public String getActiveRuleId() {
+        return this.getActiveRule().getId().getValue();
+    }
+
     public Rule getActiveRule() {
         return activeRule;
     }