[Transform] Unmute fixed tests (elastic#135108)

There were a batch of transform tests that were failing due to lingering
tasks. These should now be fixed.

Relate elastic#129851
Resolve elastic#125975
Resolve elastic#126270
Resolve elastic#126567
Resolve elastic#126568
Resolve elastic#126863

Author: prwhelan

muted-tests.yml

@@ -93,36 +93,21 @@ tests:
 - class: org.elasticsearch.xpack.core.common.notifications.AbstractAuditorTests
   method: testRecreateTemplateWhenDeleted
   issue: https://github.com/elastic/elasticsearch/issues/123232
-- class: org.elasticsearch.xpack.test.rest.XPackRestIT
-  method: test {p0=transform/transforms_stats/Test get transform stats with timeout}
-  issue: https://github.com/elastic/elasticsearch/issues/125975
 - class: org.elasticsearch.action.RejectionActionIT
   method: testSimulatedSearchRejectionLoad
   issue: https://github.com/elastic/elasticsearch/issues/125901
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=transform/transforms_reset/Test force reseting a running transform}
   issue: https://github.com/elastic/elasticsearch/issues/126240
-- class: org.elasticsearch.xpack.test.rest.XPackRestIT
-  method: test {p0=transform/transforms_stats/Test get transform stats}
-  issue: https://github.com/elastic/elasticsearch/issues/126270
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=transform/transforms_start_stop/Test start/stop only starts/stops specified transform}
   issue: https://github.com/elastic/elasticsearch/issues/126466
-- class: org.elasticsearch.xpack.test.rest.XPackRestIT
-  method: test {p0=transform/transforms_stats/Test get multiple transform stats}
-  issue: https://github.com/elastic/elasticsearch/issues/126567
-- class: org.elasticsearch.xpack.test.rest.XPackRestIT
-  method: test {p0=transform/transforms_stats/Test get single transform stats when it does not have a task}
-  issue: https://github.com/elastic/elasticsearch/issues/126568
 - class: org.elasticsearch.repositories.blobstore.testkit.rest.SnapshotRepoTestKitClientYamlTestSuiteIT
   method: test {p0=/10_analyze/Analysis without details}
   issue: https://github.com/elastic/elasticsearch/issues/126569
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=transform/transforms_start_stop/Test start/stop/start continuous transform}
   issue: https://github.com/elastic/elasticsearch/issues/126755
-- class: org.elasticsearch.xpack.test.rest.XPackRestIT
-  method: test {p0=transform/transforms_stats/Test get multiple transform stats where one does not have a task}
-  issue: https://github.com/elastic/elasticsearch/issues/126863
 - class: org.elasticsearch.index.engine.CompletionStatsCacheTests
   method: testCompletionStatsCache
   issue: https://github.com/elastic/elasticsearch/issues/126910