[automated] Merge branch 'release/9.0.3xx' => 'main' (#47559)

Author: edvilme

src/Cli/dotnet/ToolManifest/ToolManifestFinder.cs

@@ -197,7 +197,7 @@ public FilePath FindFirst(bool createIfNotFound = false)
     /*
     The --create-manifest-if-needed will use the following priority to choose the folder where the tool manifest goes:
         1. Walk up the directory tree searching for one that has a.git subfolder
-        2. Walk up the directory tree searching for one that has a .sln/git file in it
+        2. Walk up the directory tree searching for one that has a .sln(x)/git file in it
         3. Use the current working directory
     */
     private DirectoryPath GetDirectoryToCreateToolManifest()
@@ -213,7 +213,7 @@ private DirectoryPath GetDirectoryToCreateToolManifest()
             if (currentSearchDirectory.Value.Value != null)
             {
                 if (_fileSystem.Directory.EnumerateFiles(currentSearchDirectory.Value.Value)
-                    .Any(filename => Path.GetExtension(filename).Equals(".sln", StringComparison.OrdinalIgnoreCase))
+                    .Any(filename => Path.GetExtension(filename).Equals(".sln", StringComparison.OrdinalIgnoreCase) || Path.GetExtension(filename).Equals(".slnx", StringComparison.OrdinalIgnoreCase))
                     || _fileSystem.File.Exists(currentSearchDirectory.Value.WithFile(".git").Value))
 
                 {