bug: Close Editor with ESP bypasses saveCheck dialogue

[davidkircos]

Behavior A:

• Make some changes in a cell's code
• Press ESC
• Code editor closes immediately without asking to save

Expected

• When pressing ESC it will still ask to save first

Edit, similar behavior
Behavior B:

• Make some changes in a cell's code
• Click to open another editor cell
• Original code editor closes without asking to save or automatically saving

Expected

• Original code editor would either automatically save or give a prompt to save

[luke-quadratic]

As part of this issue, same experience when in an editor and opening a different editor/Python code cell. Have lost coding progress at least a dozen times doing this.