Canvas: see if we can change the zoom step from 2x to 1.5x

[maltenuhn]

Problem With page building, the default 50% zoom is often too zoomed out, but 1x is too much. When we built it, we had concerns that 75% zoom might create canvas selection problems or selection rendering problems - but we never tested this.

Solution Change the multiplier to 1.5. Test if fine-grained selection works (click v close next to an element and check it doesn't get selected), and the outlines are drawn correctly with no weird artefacts.

Send a test link on Discord and please ping you can use the graphics QA department @lankaukk secretly runs.

• Iff it looks good and behaves well, we can merge it
• If it does not, try 80% zoom instead (this might require hard-coding the interval) and share a test link with Graphics QA - don't refactor the code yet if it's not an array, because we might throw it away if it's not good!). If that looks good, we can merge it.
• Otherwise, leave a comment for our future selves in the zoom step and explain why we zoom in intervals of 2, and close the ticket.

[bkrmendy]

Last attempt: https://github.com/concrete-utopia/utopia/pull/5932

problems:

• those values flucutate +/-1 pixel (or so), so maybe that's the rendering artifact
• zooming out leads to the weird non-rounded numbers in the inspector and on the labels, but zooming in makes the numbers jump around a little too (but the end result isn't as drastic)

[maltenuhn]

I'm gonna move this back to the backlog (since there were non-trivial issues)