Unmutes elastic#138130 and elastic#138129 (elastic#138969)

Author: carlosdelest

muted-tests.yml

@@ -367,12 +367,6 @@ tests:
 - class: org.elasticsearch.search.basic.SearchWithRandomDisconnectsIT
   method: testSearchWithRandomDisconnects
   issue: https://github.com/elastic/elasticsearch/issues/138128
-- class: org.elasticsearch.upgrades.IndexSortUpgradeIT
-  method: testIndexSortForNumericTypes {upgradedNodes=2}
-  issue: https://github.com/elastic/elasticsearch/issues/138129
-- class: org.elasticsearch.upgrades.IndexSortUpgradeIT
-  method: testIndexSortForNumericTypes {upgradedNodes=1}
-  issue: https://github.com/elastic/elasticsearch/issues/138130
 - class: org.elasticsearch.xpack.inference.integration.CCMServiceIT
   method: testCreatesEisChatCompletionEndpoint
   issue: https://github.com/elastic/elasticsearch/issues/138206