Prevent legacy device tracker from creating hundreds of executor jobs (#90690)

* Prevent legacy device tracker from creating hundreds of executor jobs

The legacy device tracker would create an executor job for
each set of extra state attributes and device name lookup.

For routers this meant hundreds of jobs

* Prevent legacy device tracker from creating hundreds of executor jobs

The legacy device tracker would create an executor job for
each set of extra state attributes and device name lookup.

For routers this meant hundreds of jobs

* tweak

* simplify