The tooltip in the drag-and-drop area for uploading an image is not properly translated

[gledilex]

When the mouse cursor is placed over the drag & drop zone to insert an image into content, a tooltip is displayed with the text "No file chosen".

As the area disappears once a file has been chosen, it's irrelevant to specify the status. What's more, the text is in English even when the user's preferences are in French.

Steps to reproduce

• Select the "Insert image" button in the Froala bar
• Place mouse cursor over "Click to browse" area.

Observed result in a french page
A tooltip with the text "No file chosen"

Expected result in a french page

• A tooltip translated with the text "Aucun fichier sélectionné"
  or
• No tooltip

[btsiders]

I could use a way to hide the tooltip or to change the text as well, even without the need for translation.