feat(Menu): Option to have it the same width as the trigger

[RVledder]

Feature Description

A possibility to have the https://material.angular.io/cdk/menu/overview take over the width of the container that triggers it.
As an example the grey area should span the full width of the red in the following example:

Currently it seems that you have to provide a fixed width in px. Otherwise it does not work. But you don't always know the exact with of the 'trigger'.

There's an example here: https://vbqdncww.stackblitz.io

In issue 26336 it seems that they are overriding MAT_SELECT_CONFIG to set a min-width: min-content;, but have not gotten that to work yet.

Use Case

It would enable a more consistent styling.