already exists class file,create new class file no warning

[fjqingyou]

Environment data

dotnet --info output:
VS Code version:
C# Extension version:
C# for Visual Studio Code (powered by OmniSharp) 1.14.0
C# Extensions 1.3.0

Steps to reproduce

step1:
I Test class have a Test Method, MyTest
Mac OS system, have a ”New C# Class" menu, click it

step2:
vscode show a new file name inputbox, input a existed class name

step3:
press "enter" key , old Test.cs code been Erase

Expected behavior

if existed input name class file, show confirm replace view or intercept it input

Actual behavior

direct replace old file