title: IntelliJ does not recognize kotlin file after deleting it and recreate with the same name
body: <p>I am currently having a problem with IntelliJ. I am using Kotlin in my project. I have deleted a file (let's say test.kt), and now, I want to create a new file with the same name. IntelliJ does not recognize the kotlin syntaxe and show it as a text file.</p>
  
  <p>When I have deleted I have unchecked "safe delete" and "Search in comment and strings"</p>
  
  <p>Can anyone help me in this matter ?</p>
  
  <p>Edit : I tried to delete .idea and .iml file, restart intelliJ. It does not change anything.</p>