MtxPopover breaks Material's autocomplete list when it is opened

[adrianbenjuya]

MtxPopover focuses the first element of its content when it is opened, but if that element is a mat-chip-list with an autocomplete it will break the suggestions list.

For now I disabled the focus trap to prevent focusing, but that is just a workaround.

I made a stackblitz to reproduce it: https://stackblitz.com/edit/angular-1srrxt?file=src/app/chips-autocomplete-example.html