Blender Git Loki

Fix T82870: on macOS, continuous grab jumps when crossing editor border

The event queue can contain events from before pointer warping, ignore those
now. This is an old issue, but became more common now that we disabled event
coalescing and started using the event mouse location rather than the current
mouse location.

Thanks to Yevgeny Makarov and Nicholas Rishel for helping solve this.

Ref D9662