Merge pull request #15720 from robGardiner01/fix-autocomplete-empty-m…

…essage

FIX - Autocomplete: Showing empty overlay when has no suggestions and showEmptyMessage is false

src/app/components/autocomplete/autocomplete.ts

@@ -954,7 +954,7 @@ export class AutoComplete implements AfterViewChecked, AfterContentInit, OnDestr
 
     handleSuggestionsChange() {
         if (this.loading) {
-            this._suggestions() ? this.show() : !!this.emptyTemplate ? this.show() : this.hide();
+            this._suggestions().length > 0 || this.showEmptyMessage ? this.show() : !!this.emptyTemplate ? this.show() : this.hide();
             const focusedOptionIndex = this.overlayVisible && this.autoOptionFocus ? this.findFirstFocusedOptionIndex() : -1;
             this.focusedOptionIndex.set(focusedOptionIndex);
             this.suggestionsUpdated = true;