Fix javadoc errors by escaping > characters in comments

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: wu-sheng

oap-server/oal-rt/src/main/java/org/apache/skywalking/oal/v2/model/FilterExpression.java

@@ -27,7 +27,7 @@
  *
  * Examples:
  * <pre>
- * latency > 100          → fieldName="latency", operator=">", value=NUMBER:100
+ * latency &gt; 100          → fieldName="latency", operator="&gt;", value=NUMBER:100
  * status == true         → fieldName="status", operator="==", value=BOOLEAN:true
  * name like "serv%"      → fieldName="name", operator="like", value=STRING:"serv%"
  * tag["key"] != null     → fieldName="tag[key]", operator="!=", value=NULL

oap-server/oal-rt/src/main/java/org/apache/skywalking/oal/v2/model/FilterValue.java

@@ -37,7 +37,7 @@
  *
  * Examples:
  * <pre>
- * latency > 100              → NUMBER: 100L
+ * latency &gt; 100              → NUMBER: 100L
  * status == true             → BOOLEAN: true
  * name like "serv%"          → STRING: "serv%"
  * type == RequestType.MQ     → ENUM: RequestType.MQ

oap-server/oal-rt/src/main/java/org/apache/skywalking/oal/v2/model/MetricDefinition.java

@@ -30,7 +30,7 @@
  *
  * Example OAL:
  * <pre>
- * service_resp_time = from(Service.latency).filter(latency > 0).longAvg().decorator("ServiceDecorator");
+ * service_resp_time = from(Service.latency).filter(latency &gt; 0).longAvg().decorator("ServiceDecorator");
  * </pre>
  *
  * This class is immutable and thread-safe. Use the Builder to construct instances.

oap-server/oal-rt/src/main/java/org/apache/skywalking/oal/v2/parser/OALListenerV2.java

@@ -39,7 +39,7 @@
  * <pre>
  * service_resp_time = from(Service.latency).longAvg();
  * service_sla = from(Service.*).filter(status == true).percent();
- * endpoint_calls = from(Endpoint.*).filter(latency > 100).count();
+ * endpoint_calls = from(Endpoint.*).filter(latency &gt; 100).count();
  * </pre>
  *
  * Parsing flow for "service_resp_time = from(Service.latency).longAvg();":