Menu with disabled options doesn't close on ESC

[RandomNonameDude]

Reproduction

Use StackBlitz to reproduce your issue: https://stackblitz.com/edit/angular-y1wytp?file=app/menu-icons-example.html

Steps to reproduce:

1. Create menu with disabled options only
2. Open it
3. Try pressing ESC key

Expected Behavior

The menu should close after pressing ESC key, same as it does when it contains at least one non-disabled option

Actual Behavior

The menu does not close after pressing ESC key

Environment

• Angular: 8.1.2
• CDK/Material: 8.0.2
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows

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