[CI] JvmStatsTests testJvmStats failing (115711) (#116197)

Fix and unmute test JvmStatsTests.testJvmStats

Fixes #115711

Author: alexey-ivanov-es

muted-tests.yml

@@ -193,9 +193,6 @@ tests:
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=ml/inference_crud/Test delete given model referenced by pipeline}
   issue: https://github.com/elastic/elasticsearch/issues/115970
-- class: org.elasticsearch.monitor.jvm.JvmStatsTests
-  method: testJvmStats
-  issue: https://github.com/elastic/elasticsearch/issues/115711
 - class: org.elasticsearch.repositories.s3.S3ServiceTests
   method: testRetryOn403RetryPolicy
   issue: https://github.com/elastic/elasticsearch/issues/115986

server/src/test/java/org/elasticsearch/monitor/jvm/JvmStatsTests.java

@@ -53,7 +53,7 @@ public void testJvmStats() {
         assertThat(memoryPools, hasKey("Metaspace"));
         assertThat(memoryPools.keySet(), hasSize(greaterThan(3)));
         for (JvmStats.MemoryPool memoryPool : memoryPools.values()) {
-            assertThat(memoryPool.getUsed().getBytes(), greaterThan(0L));
+            assertThat("Memory pool: " + memoryPool.getName(), memoryPool.getUsed().getBytes(), greaterThanOrEqualTo(0L));
         }
 
         // Threads