[bug] Multi-touch input on iPad when draw & pencil selected makes line between all fingers

[colinfwren]

Steps to reproduce

• Load app.tldraw.dev on iPad (15.3.1)
• Select draw or pencil tool
• Place two or more fingers on the canvas and drag (needs to be down for four or more fingers to counteract iOS' inbuilt gesture)

Expected Results

• Panning behaviour as with when mouse is scrolled on desktop

Actual Result

• A line is drawn rapidly between the finger points

Evidence
I had to rely on assistivetouch to record the behaviours for different touch combinations but it doesn't support more than five fingers, however you can do this with up to 10.

tldraw-multi-touch-defect.mp4