[ML] Unmute chunking test (#116124)

* unmute test

* fix formatting

Author: maxhniebergall

muted-tests.yml

@@ -234,9 +234,6 @@ tests:
 - class: org.elasticsearch.kibana.KibanaThreadPoolIT
   method: testBlockedThreadPoolsRejectUserRequests
   issue: https://github.com/elastic/elasticsearch/issues/113939
-- class: org.elasticsearch.xpack.inference.integration.ModelRegistryIT
-  method: testGetModel
-  issue: https://github.com/elastic/elasticsearch/issues/114657
 - class: org.elasticsearch.xpack.inference.TextEmbeddingCrudIT
   method: testPutE5WithTrainedModelAndInference
   issue: https://github.com/elastic/elasticsearch/issues/114023