refactor(material/select): replace cdkFocusTrap with cdkListboxUseActiveDescendant

Updates previous fix to account for previous fix angular#6856 which refactored
focus on listbox to use aria-activedescendant instead to manage focus.

Fixes b/285945157

Author: essjay05

src/material/select/select.html

@@ -45,8 +45,8 @@
   <div
     #panel
     role="listbox"
-    cdkFocusTrap
-    cdkTrapFocusAutoCapture
+    cdkListbox
+    cdkListboxUseActiveDescendant
     tabindex="-1"
     class="mat-mdc-select-panel mdc-menu-surface mdc-menu-surface--open {{ _getPanelTheme() }}"
     [attr.id]="id + '-panel'"