sitelinkview: Implemented "remove" toolbar with icon

This change moves the "remove" toolbar right next to the site id and displays an icon instead
of the button text. For now, the change applies locally to the sitelinkview only. The logic will
be reevaluated and moved when converting the statement interface.

Deployment note: Requires purging the parser cache.

Bug: T76212
Change-Id: I9dc1849b1f6eaa456def2c31771c6caa13e3cd72