Prevent preview from showing when not hovering the canvas

[mech-tools]

Hello,

When a journal entry is open, if the mouse hover over the journal and at the same time a note journal on the canvas, the preview is opened.
And when the journal entry is closed, the preview is stuck until the mouse hover over another note on the canvas.

[p4535992]

Solved on my fork https://github.com/p4535992/pin-cushion/releases/latest/download/module.json