map.on() and passive: false events

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**mapbox-gl-js version**: 0.45.0
**browser**: iOS 11.3

### Steps to Trigger Behavior
1. create a map with touchZoomRotate: false
2. add an event handler to a `passive: false` event, like `touchmove` which calls `e.preventDefault()`
3. try touch-zooming, the browser viewport will zoom

### Link to Demonstration
full screen: https://03qo50z3rw.codesandbox.io/
https://codesandbox.io/s/03qo50z3rw

### Expected Behavior
`e.preventDefault()` should disable browser viewport zooming

### Actual Behavior
The browser window zooms, even with `e.preventDefault()`

I tried an alternative, `e.originalEvent.preventDefault()` which seems to work, however the official drag point example uses `e.preventDefault()`.

cc: @jfirebaugh
ref: https://github.com/mapbox/mapbox-gl-js/issues/6095
pr: https://github.com/mapbox/mapbox-gl-js/pull/6248

Start by reproducing the issue with the linked CodeSandbox using map.on(), touchZoomRotate: false, and a passive: false touchmove handler. Review the related issue #6095 and pull request #6248, then trace the event path needed for e.preventDefault() to stop viewport zooming; done means the documented handler behaves as expected on iOS.

Written by the indexing model from the issue text.