[pause] command clashes with skipping text

[Jowan-Spooner]

The problem

Describe the bug
If you hit the action key to skip the text animation while the TextBubble handles a [pause] command, it will continue the animation ones the pause is finished. This means some text will hide again and the animation is shown, although you skipped already.

In questions this can even lead to having all choices TWICE on screen, because the _on_text_finished() function is executed twice.

To Reproduce
Steps to reproduce the behavior:

1. Create a text event that has a [pause = 2] command in it.
2. Play the game
3. While the text pauses, hit ENTER once
4. See the text shortly
5. Then see the animation continue where it stopped

Expected behavior
No more animating.