ci: Set tests check to pending when maven build starts (#9125)

Jenkinsfile

@@ -118,6 +118,7 @@ axes.values().combinations {
               }
               mavenOptions.add(0, "-Dsurefire.excludesFile=${excludesFile}")
             }
+            withChecks(name: 'Tests', includeStage: true) {
               realtimeJUnit(healthScaleFactor: 20.0, testResults: '*/target/surefire-reports/*.xml') {
                 infra.runMaven(mavenOptions, jdk)
                 if (isUnix()) {
@@ -126,6 +127,7 @@ axes.values().combinations {
               }
             }
           }
+        }
 
         // Once we've built, archive the artifacts and the test results.
         stage("${platform.capitalize()} - JDK ${jdk} - Publish") {
@@ -219,10 +221,13 @@ athAxes.values().combinations {
         // Just to be safe
         deleteDir()
         checkout scm
+
+        withChecks(name: 'Tests', includeStage: true) {
           infra.withArtifactCachingProxy {
             sh "bash ath.sh ${jdk} ${browser}"
           }
           junit testResults: 'target/ath-reports/TEST-*.xml', testDataPublishers: [[$class: 'AttachmentPublisher']]
+        }
         /*
          * Currently disabled, as the fact that this is a manually created subset will confuse Launchable,
          * which expects this to be a full build. When we implement subsetting, this can be re-enabled using