Fix and unmute testIndexSettingProviderPrivateSetting (elastic#134861)

Author: felixbarny

muted-tests.yml

@@ -549,9 +549,6 @@ tests:
 - class: org.elasticsearch.xpack.esql.ccq.MultiClusterSpecIT
   method: test {csv-spec:fork.ForkBeforeStatsByWithWhere}
   issue: https://github.com/elastic/elasticsearch/issues/134817
-- class: org.elasticsearch.cluster.metadata.MetadataCreateIndexServiceTests
-  method: testIndexSettingProviderPrivateSetting
-  issue: https://github.com/elastic/elasticsearch/issues/134846
 - class: org.elasticsearch.repositories.blobstore.testkit.analyze.MinioRepositoryAnalysisRestIT
   method: testRepositoryAnalysis
   issue: https://github.com/elastic/elasticsearch/issues/134853

server/src/test/java/org/elasticsearch/cluster/metadata/MetadataCreateIndexServiceTests.java

@@ -1788,7 +1788,7 @@ public void testSetPrivateSettingsSucceedsWhenSystemProvided() throws Exception
                 clusterService,
                 indicesService,
                 null,
-                createTestShardLimitService(randomIntBetween(1, 1000), clusterService),
+                createTestShardLimitService(randomIntBetween(10, 1000), clusterService),
                 newEnvironment(),
                 new IndexScopedSettings(Settings.EMPTY, IndexScopedSettings.BUILT_IN_INDEX_SETTINGS),
                 threadPool,
@@ -1819,7 +1819,7 @@ public void testIndexSettingProviderPrivateSetting() throws Exception {
                 clusterService,
                 indicesService,
                 null,
-                createTestShardLimitService(randomIntBetween(1, 1000), clusterService),
+                createTestShardLimitService(randomIntBetween(10, 1000), clusterService),
                 newEnvironment(),
                 new IndexScopedSettings(Settings.EMPTY, IndexScopedSettings.BUILT_IN_INDEX_SETTINGS),
                 threadPool,