)

## Summary

Fixes a bug in timeline-based views, (e.g. the Host Events table), where a column would revert back to it's original position after being dragged and dropped to a new position.

Only timeline-based views were effected, not the timeline itself.

To reproduce:

1) On the SIEM Overview page, click the `View events` button

2) Drag and drop any column in the Events table to a new position

**Expected Result**

- The column is relocated to the position where it was dropped

**Actual Result**

- The column reverts to it's original position

## Testing

- This PR adds a Cypress test for this scenario
  - The new test was successfully run (at least) 10 times via `node x-pack/plugins/siem/scripts/loop_cypress_tests.js`

- This fix was desk tested in:
  - Chrome `83.0.4103.61`
  - Firefox `76.0.1`
  - Safari `13.1`

# Conflicts:
#	x-pack/plugins/siem/public/common/components/drag_and_drop/drag_drop_context_wrapper.tsx
#	x-pack/plugins/siem/public/common/components/drag_and_drop/helpers.ts