[ENHANCEMENT] Use Flatlaf to Open Puzzles to Edit

[kevinkxu]

Describe the current behavior of what you're trying to improve. If your enhancement request related to a problem, please also describe the problem.

Currently, puzzles are not opened using Flatlaf if one wants to open a puzzle to edit.

Describe the improvement you'd like

Use Flatlaf when opening puzzles to edit (same process as opening puzzles to solve)

Describe alternatives you've considered

No response

Additional Context

No response