[UI] [Conditions] Process TokenizingTextBox doesn't filter processes while typing

The current implementation of TokenizingTextBox feels buggy and is not user friendly.

• The list should appear already after the user just clicks on the field, not after he starts typing. If possible.
• The list should filter while typing, just like shown in the example of Microsoft for the AutoSuggestbox. If i type "adob" the list should only show processes with the string "adob" in the title.