Images in markdown don't render correctly if an in-line HTML center tag is present in programming exercises' problem statements.

[SimonKaran13]

Describe the bug

When an image is sorrounded between in-line

HTML tags in the Markdown Editor for programming exercises' problem statements. The image is not rendered, instead the image's "code" (![imageName](path-to-image.PNG)) is shown centered.

To Reproduce

1. In the programming exercises problem statement, add an image (for example by copy-paste).
2. Surround the image with <center> and </center> in the same line.
3. See the rendered preview.

Expected behavior

The image should be rendered and centered, the same way it is rendered when the center tags are in a line before and after the image.

Screenshots

Which version of Artemis are you seeing the problem on?

7.9.0

What browsers are you seeing the problem on?

Chrome

Additional context

No response

Relevant log output