Blockly update: Chase the Pizza Step 7 Sprite Editor defaults to a 1x1 canvas

[srietkerk]

When going through Chase the Pizza on the test target, when you reach step 7 and go to select a pizza sprite from the gallery, the canvas on which you can draw is 1x1 by default instead of 16x16 which is standard. You can still select a pizza sprite just fine, but it's still a bit bizarre that the sprite editor is defaulting to 1x1 on that step.

To Reproduce Steps to reproduce the behavior:

1. Go to the blockly update target
2. Start the chase the pizza tutorial
3. Go to step 7
4. Change the sprite
5. See the 1x1 default

Expected behavior The default canvas size of the sprite editor should be 16x16 like it is for the mySprite step.

Desktop (please complete the following information):

• OS: Windows 11
• Chrome, incognito