fix(ui5-input): prevent selection of suggestion group item (#2777)

FIXES: #2255

Author: ivoplashkov

packages/main/src/features/InputSuggestions.js

@@ -167,6 +167,10 @@ class Suggestions {
 			return;
 		}
 
+		if (item.group) {
+			return;
+		}
+
 		this._getComponent().onItemSelected(this._getRealItems()[this.selectedItemIndex], keyboardUsed);
 		item.selected = false;
 		this.close();

packages/main/test/specs/Input.spec.js

@@ -239,11 +239,15 @@ describe("Input general interaction", () => {
 	it("handles group suggestion item via keyboard", () => {
 		const suggestionsInput = $("#myInputGrouping").shadow$("input");
 		const inputResult = $("#inputResultGrouping").shadow$("input");
+		const staticAreaItemClassName = browser.getStaticAreaItemClassName("#myInputGrouping");
+		const respPopover = browser.$(`.${staticAreaItemClassName}`).shadow$("ui5-responsive-popover");
 
 		suggestionsInput.click();
 		suggestionsInput.keys("ArrowDown");
 		suggestionsInput.keys("Enter");
+		browser.pause(300);
 
+		assert.ok(respPopover.getProperty("opened"), "Popover should not be closed after trying to select a group header.");
 		assert.strictEqual(suggestionsInput.getValue(), "", "Group item is not selected");
 		assert.strictEqual(inputResult.getValue(), "", "suggestionItemSelected event is not called");
 	});