Unmute tests

Unmutes `DataTierAllocationDeciderIT
.testDesiredNodesAreTakenIntoAccountInAutoExpandReplicas` and
`DataTierAllocationDeciderIT
.testShardsAreKeptInPreferredTierUntilTheNextTierIsInItsFinalState`
since the problematic commit elastic#132023 has been reverted

Author: joshua-adams-1

muted-tests.yml

@@ -543,12 +543,6 @@ tests:
 - class: org.elasticsearch.xpack.esql.action.RandomizedTimeSeriesIT
   method: testRateGroupBySubset
   issue: https://github.com/elastic/elasticsearch/issues/134019
-- class: org.elasticsearch.xpack.cluster.routing.allocation.DataTierAllocationDeciderIT
-  method: testDesiredNodesAreTakenIntoAccountInAutoExpandReplicas
-  issue: https://github.com/elastic/elasticsearch/issues/134049
-- class: org.elasticsearch.xpack.cluster.routing.allocation.DataTierAllocationDeciderIT
-  method: testShardsAreKeptInPreferredTierUntilTheNextTierIsInItsFinalState
-  issue: https://github.com/elastic/elasticsearch/issues/134050
 
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