Quarantine Http3RequestTests.POST_Expect100Continue_Get100Continue (#57533)

* Quarantine Http3RequestTests.POST_Expect100Continue_Get100Continue

This failed even with helix retries.

Issue: #57373

* Add retry for `FunctionalTests.NewShimTests.CheckNewShimIsUsed`

`Microsoft.AspNetCore.Server.IIS.NewShim.FunctionalTests.NewShimTests.CheckNewShimIsUsed`

Issue: #57538

Author: radical

eng/test-configuration.json

@@ -11,7 +11,7 @@
     {"testName": {"contains": "CanLaunchPhotinoWebViewAndClickButton"}},
     {"testName": {"contains": "CheckInvalidHostingModelParameter"}},
     {"testName": {"contains": "CanSendAndReceiveUserMessagesFromMultipleConnectionsWithSameUser"}},
-    {"testName": {"contains": "POST_Expect100Continue_Get100Continue"}},
+    {"testName": {"contains": "CheckNewShimIsUsed"}}, // Issue: https://github.com/dotnet/aspnetcore/issues/57538
     {"testAssembly": {"contains": "IIS"}},
     {"testAssembly": {"contains": "Template"}},
     {"failureMessage": {"contains":"(Site is started but no worker process found)"}},

src/Servers/Kestrel/test/Interop.FunctionalTests/Http3/Http3RequestTests.cs

@@ -700,6 +700,7 @@ public async Task GET_ServerAbort_ClientReceivesAbort(HttpProtocols protocol)
 
     [ConditionalFact]
     [MsQuicSupported]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/57373")]
     public async Task POST_Expect100Continue_Get100Continue()
     {
         // Arrange