Feedback Analysis: Error details feedback cut off

[b-fein]

Describe the bug

Under Grading -> Feedback analysis the different feedbacks for students can be viewed by instructors to check for common errors.

When showing the error details dialogue for such a feedback, it is cut off in case a LongFeedback is used to show the full feedback. I.e. the feedback text in the dialogue box ends with [...] instead of showing the full feedback.

To Reproduce

1. Set up a Programming exercise that produces longer feedback texts.
2. Go to the Grading -> Feedback Analysis page for the exercise.
3. Show the Error Details dialogue for one of the long feedbacks.
4. The text is cut off.

Expected behavior

The full feedback text is shown.

Screenshots

No response

Which version of Artemis are you seeing the problem on?

7.7.0

What browsers are you seeing the problem on?

Firefox

Additional context

Note: The same lazy-loading idea as for the regular feedback details list for the student should be used and only load the full long feedback if necessary when opening a Error Details dialogue. (The client should have a long feedback service, if I remember correctly.)

Relevant log output

No response

[b-fein]

/cc @az108