Improved the monitors scan server page #15448

Job	Run time
fastbuild	1m 47s
mvn (jdk25, 25, verify javadoc:jar -DskipTests)	6m 24s
mvn (compat, 21, package -DskipTests -Dversion.hadoop=3.0.3 -Dversion.zookeeper=3.6.4)	1m 30s
mvn (errorprone, 21, verify -Perrorprone,skipQA)	2m 38s
mvn (qa-checks, 21, verify javadoc:jar -Psec-bugs -DskipTests -Dspotbugs.timeout=3600000)	6m 8s
mvn (unit-tests, 21, verify -PskipQA -DskipTests=false)	7m 10s
	25m 37s

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