Add missing file in net9 mstest F# template.json (#368)

Author: Evangelink

template_feed/Microsoft.DotNet.Test.ProjectTemplates.9.0/content/MSTest-FSharp/.template.config/template.json

@@ -61,6 +61,10 @@
   },
   "primaryOutputs": [
     { "path": "Company.TestProject1.fsproj" },
+    {
+      "condition": "(HostIdentifier != \"dotnetcli\" && HostIdentifier != \"dotnetcli-preview\")",
+      "path": "MSTestSettings.fs"
+    },
     {
       "condition": "(HostIdentifier != \"dotnetcli\" && HostIdentifier != \"dotnetcli-preview\")",
       "path": "Tests.fs"