Unmute SnapshotShutdownIT.testSnapshotShutdownProgressTracker

Author: JeremyDahlgren

muted-tests.yml

@@ -420,9 +420,6 @@ tests:
 - class: org.elasticsearch.action.admin.indices.diskusage.IndexDiskUsageAnalyzerTests
   method: testKnnVectors
   issue: https://github.com/elastic/elasticsearch/issues/127689
-- class: org.elasticsearch.snapshots.SnapshotShutdownIT
-  method: testSnapshotShutdownProgressTracker
-  issue: https://github.com/elastic/elasticsearch/issues/127690
 - class: org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT
   method: test {p0=search/350_point_in_time/point-in-time with index filter}
   issue: https://github.com/elastic/elasticsearch/issues/127741