Mobile: tap Upload Panel drop area opens keyboard

[sergey124]

On mobile, tap Upload Panel drop area opens keyboard, while it's disabled in teneo-web-chat configuration.
Apparently, browser treats drop area as a text input field.

Prerequisites

Disable user input with TeneoWebChat.call('disable_user_input')

Steps to reproduce

1. Open chat window
2. Click Upload button
   • Upload Panel shows
3. Tap Upload Panel drop area

Expected behavior

• no keyboard shown

Actual behavior

• keyboard shown