fix(preload): Fix bad merge in ECG app

OFFSET was renamed to OFFSET_Y in ea5a30d9 ("add pause-mode"), while the call to draw_leds() in bc7e3b92 ("Add led activity to ECG app") still uses the old name. This causes an exception and the ECG app fails to proceed past the start screen.

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

And this is why we need regression testing ... darn, sorry about that

added 3 - Preload 6 - To Be Merged labels

merged

mentioned in commit e597083f