feat(mat-select): add smart panel width based on trigger and largest option size

### Feature Description

Currently `panelWidth` can be one of three:
1. Trigger width
2. Largest option width
3. Custom provided width in numbers

What I am missing is - minimum width as trigger width and grow until max option size (if needed)

### Use Case

When having dynamic options texts sometimes they might be larger than trigger width and I want the largest option behavior.
Sometimes they are smaller than trigger width and I want the trigger width behavior to avoid really small select panels.
Which means I actually need: min panel width = trigger width with potential grow (not shrink!) to the largest option width.

Can be with a new `panelWidth` option or even `minPanelWidth` input (can have a complimenting `maxPanelWidth` too for completeness)

Comienza leyendo el manejo existente de panelWidth de mat-select y los comportamientos trigger-width y largest-option descritos en el issue. Define e implementa una API o una opción que mantenga el panel al menos tan ancho como el trigger y permita que crezca hasta alcanzar el ancho de la opción más grande; después, verifica el comportamiento tanto para opciones más anchas como más estrechas.

Escrito por el modelo de indexación a partir del texto del issue.