Mark as Explicit test: ShutdownDataConsistencyTests

To follow copilot's Suggestion, this test didn't require on CI
just to keep for infomational test for develope

microsoft#1825 (comment)

Author: yuseok-kim-edushare

test/standalone/Garnet.test/ShutdownDataConsistencyTests.cs

@@ -21,6 +21,7 @@ namespace Garnet.test
     /// performs the finalization sequence, disposes without cleanup, recovers, and verifies data.
     /// </summary>
     [TestFixture]
+    [Explicit]
     public class ShutdownDataConsistencyTests : TestBase
     {
         private GarnetServer server;