bug: Blockly model solutions are off center

[evemartin]

Describe the bug
After clicking the "Solve" button on levels with Blockly, the model solution appears off center, sometimes so off center that it's cut off on the edge of the Blockly pane. This is especially noticeable in Blockly/Python levels.

To Reproduce
Steps to reproduce the behaviour:

1. Log in as a teacher.
2. Go to a Blockly or Blockly/Python level, i.e. Python Den level 15
3. Click on "Solve"
4. Notice that the model solution appears but is off center and cut off

Expected behaviour
The position of the blocks is defined in the model solution data - the loaded solution should appear in the top-left corner of the window, maybe at coordinates 100,100. to minimise the risk of the solution being cut off.

Screenshots
Screencast from 12-11-24 11:55:29.webm

Good places to start
Ask a member of the Code for Life team for guidance on the relevant files.