Fix random failing of tests

Fully initialize the configuration manager at the init stage

```
Failed Jellyfin.Server.Integration.Tests.Controllers.ActivityLogControllerTests.ActivityLog_GetEntries_Ok [2 s]
  Error Message:
   MediaBrowser.Common.Extensions.ResourceNotFoundException : Configuration with key metadata not found.
  Stack Trace:
     at Emby.Server.Implementations.AppBase.BaseConfigurationManager.<>c__DisplayClass43_0.<GetConfiguration>b__0(String k) in D:\a\1\s\Emby.Server.Implementations\AppBase\BaseConfigurationManager.cs:line 309
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Emby.Server.Implementations.AppBase.BaseConfigurationManager.GetConfiguration(String key) in D:\a\1\s\Emby.Server.Implementations\AppBase\BaseConfigurationManager.cs:line 300
   at MediaBrowser.Common.Configuration.ConfigurationManagerExtensions.GetConfiguration[T](IConfigurationManager manager, String key) in D:\a\1\s\MediaBrowser.Common\Configuration\IConfigurationManager.cs:line 88
   at MediaBrowser.Controller.Library.MetadataConfigurationExtensions.GetMetadataConfiguration(IConfigurationManager config) in D:\a\1\s\MediaBrowser.Controller\Library\MetadataConfigurationStore.cs:line 28
   at Emby.Server.Implementations.Library.ResolverHelper.SetDateCreated(BaseItem item, IFileSystem fileSystem, FileSystemMetadata info) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 159
   at Emby.Server.Implementations.Library.ResolverHelper.EnsureDates(IFileSystem fileSystem, BaseItem item, ItemResolveArgs args) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 153
   at Emby.Server.Implementations.Library.ResolverHelper.SetInitialItemValues(BaseItem item, ItemResolveArgs args, IFileSystem fileSystem, ILibraryManager libraryManager) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 81
   at Emby.Server.Implementations.Library.LibraryManager.ResolveItem(ItemResolveArgs args, IItemResolver[] resolvers) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 480
   at Emby.Server.Implementations.Library.LibraryManager.ResolvePath(FileSystemMetadata fileInfo, IDirectoryService directoryService, IItemResolver[] resolvers, Folder parent, String collectionType, LibraryOptions libraryOptions) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 618
   at Emby.Server.Implementations.Library.LibraryManager.ResolvePath(FileSystemMetadata fileInfo, Folder parent) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 536
   at Emby.Server.Implementations.Library.LibraryManager.CreateRootFolder() in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 732
   at Emby.Server.Implementations.Library.LibraryManager.get_RootFolder() in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 180
   at Emby.Server.Implementations.IO.LibraryMonitor.Start() in D:\a\1\s\Emby.Server.Implementations\IO\LibraryMonitor.cs:line 135
   at Emby.Server.Implementations.IO.LibraryMonitorStartup.RunAsync() in D:\a\1\s\Emby.Server.Implementations\IO\LibraryMonitorStartup.cs:line 26
   at Emby.Server.Implementations.ApplicationHost.StartEntryPoints(IEnumerable`1 entryPoints, Boolean isBeforeStartup)+MoveNext() in D:\a\1\s\Emby.Server.Implementations\ApplicationHost.cs:line 541
   at System.Threading.Tasks.Task.WhenAll(IEnumerable`1 tasks)
   at Emby.Server.Implementations.ApplicationHost.RunStartupTasksAsync(CancellationToken cancellationToken) in D:\a\1\s\Emby.Server.Implementations\ApplicationHost.cs:line 525
   at Jellyfin.Server.Integration.Tests.JellyfinApplicationFactory.CreateServer(IWebHostBuilder builder) in D:\a\1\s\tests\Jellyfin.Server.Integration.Tests\JellyfinApplicationFactory.cs:line 101
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.EnsureServer()
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateDefaultClient(DelegatingHandler[] handlers)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateDefaultClient(Uri baseAddress, DelegatingHandler[] handlers)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateClient(WebApplicationFactoryClientOptions options)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateClient()
   at Jellyfin.Server.Integration.Tests.Controllers.ActivityLogControllerTests.ActivityLog_GetEntries_Ok() in D:\a\1\s\tests\Jellyfin.Server.Integration.Tests\Controllers\ActivityLogControllerTests.cs:line 21
--- End of stack trace from previous location ---

```

1 files changed, 1 insertions, 1 deletions

diff --git a/Jellyfin.Server/Program.cs b/Jellyfin.Server/Program.cs
index 4f203b7a9..464e02419 100644
--- a/Jellyfin.Server/Program.cs
+++ b/Jellyfin.Server/Program.cs
@@ -173,7 +173,7 @@ namespace Jellyfin.Server
                 // If hosting the web client, validate the client content path
                 if (startupConfig.HostWebClient())
                 {
-                    string? webContentPath = appHost.ServerConfigurationManager.ApplicationPaths.WebPath;
+                    string? webContentPath = appHost.ConfigurationManager.ApplicationPaths.WebPath;
                     if (!Directory.Exists(webContentPath) || Directory.GetFiles(webContentPath).Length == 0)
                     {
                         throw new InvalidOperationException(