Reenable CacheFileTests (#115582)

The test issue was fixed by #110807

closes #110801

Author: rjernst

muted-tests.yml

@@ -23,9 +23,6 @@ tests:
 - class: org.elasticsearch.xpack.security.authz.store.NativePrivilegeStoreCacheTests
   method: testPopulationOfCacheWhenLoadingPrivilegesForAllApplications
   issue: https://github.com/elastic/elasticsearch/issues/110789
-- class: org.elasticsearch.xpack.searchablesnapshots.cache.common.CacheFileTests
-  method: testCacheFileCreatedAsSparseFile
-  issue: https://github.com/elastic/elasticsearch/issues/110801
 - class: org.elasticsearch.nativeaccess.VectorSystemPropertyTests
   method: testSystemPropertyDisabled
   issue: https://github.com/elastic/elasticsearch/issues/110949