fix(components/lookup): set aria-expanded to true on the autocomplete component when the dropdown is open (#544)

* fix aria-expanded value addition

* fix(components/lookup): fix the autocomplete component to properly add the aria-expanded property to the combobox role

* remove unnecessary qualifier for aria-expanded

Co-authored-by: Braden Bisping <bradennbisping@gmail.com>

Author: bradenbiz

libs/components/lookup/src/lib/modules/autocomplete/autocomplete.component.html

@@ -3,7 +3,7 @@
   aria-haspopup="listbox"
   class="sky-autocomplete"
   role="combobox"
-  [attr.aria-expanded]="isOpen && searchText"
+  [attr.aria-expanded]="isOpen"
   [attr.aria-labelledby]="ariaLabelledBy"
   [attr.aria-owns]="isOpen ? resultsListId : null"
   [attr.id]="resultsWrapperId"