fix issue with upload of the same file

[korel-san]

The flow for the test is like this:

1. upload a file via the dialog box (click on the component)
2. click on the trash button
3. see that the uploaded file is removed
4. try to upload the same file via the dialog box (click on the component)

Behavior after changes: the same file is uploaded
Behavior before changes: the component does nothing

[fateeand]

the code doesn't compile