Ahmad Samir authored Mar 20, 2021 and Kurt Hindenburg committed Mar 23, 2021

This should prevent opening two instance of the EditProfileDialog in the
same process, i.e. if "run all konsole windows in a single process" option is:
- Enabled, then opening the dialog will block user interaction with all
  other konsole windows (including tabs).
- Disabled, then open the dialog will block user interactin with all
  other tabs in the same window

This simplifies the code since it checked if such a dialog was open
somewhere else to prevent crashes.