fix(drag-drop): global resize subscription not cleared (#17257)
fix(drag-drop): global resize subscription not cleared (#17257)

Fixes the viewort resize subscription not being removed when the `DragRef` is destroyed.

Fixes #17255.
josephperrott/material2,Jefiozie/material2,DevVersion/material2,Jefiozie/material2,mmalerba/material2,Jefiozie/material2,Jefiozie/material2,DevVersion/material2,mmalerba/material2,crisbeto/material2,DevVersion/material2,andrewseguin/material2,angular/components,josephperrott/material2,angular/components,josephperrott/material2,angular/components,andrewseguin/material2,angular/components,DevVersion/material2,josephperrott/material2,Jefiozie/material2,mmalerba/material2,mmalerba/material2,josephperrott/material2,crisbeto/material2,andrewseguin/material2,crisbeto/material2,andrewseguin/material2,mmalerba/material2,crisbeto/material2,DevVersion/material2,andrewseguin/material2