Improve the UX for adding / removing example words on flashcards

[fabd]

Currently tapping in the middle of the card on phone (portrait) causes the Dict dialog to open.

It was meant to be a super simple way to pick a word, or remove a word.

However this is probably not ideal for phone users as this is not obvious, and causes any tap in a large area center of the card to open the dialog which may be unwanted.

• put a small "-" minus or "x" cross to the right side, make it a smaller tap target
  • needs testing longer example words, as this reduces the horizontal space available for the word, and avoid overlapping the icon on top of the word
• this should allow also to tap and select the text -- not sure how it works on phone, but on desktop while user can select example word text in the flashcard, it causes the Dict dialog to open after releasing LMB