[Feature]: Improve and fix absolute dragMode

GrapesJS version

• I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome v93

Reproducible demo link

https://codepen.io/damnslow/pen/yLXXOxQ

Describe the bug

How to reproduce the bug?

1. Select both the elements
2. Drag using drag icon

What is the expected behavior? Both elements should move together

What is the current behavior? Only one element moves.

If is necessary to execute some code in order to reproduce the bug, paste it here below: No.

Code of Conduct

• I agree to follow this project's Code of Conduct