Fix #4200: Vsix: fix empty "New file" window for web projects (#4202)
Fix #4200: Vsix: fix empty "New file" window for web projects (#4202)


dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,ncave/FSharp.Compiler.Service,ncave/FSharp.Compiler.Service,brettfo/visualfsharp,syeerzy/visualfsharp,syeerzy/visualfsharp,syeerzy/visualfsharp,dsyme/FSharp.Compiler.Service,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,fsharp/fsharp,Jand42/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,brettfo/visualfsharp,dsyme/fsharp,dsyme/FSharp.Compiler.Service,ncave/FSharp.Compiler.Service,fsharp/fsharp,Jand42/FSharp.Compiler.Service,syeerzy/visualfsharp,Jand42/FSharp.Compiler.Service,cloudRoutine/FSharp.Compiler.Service,syeerzy/visualfsharp,syeerzy/visualfsharp,brettfo/visualfsharp,cloudRoutine/FSharp.Compiler.Service,fsharp/fsharp,brettfo/visualfsharp,dsyme/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp