Support highlighting the menu entry for search results

- Swap the order of indexing SiteMap and inserting index data to DB
- Update index data payload after initializing SiteMap
- Develop methods to determine highlight menu keys
- Hide keyboards when scrolling and clicking a result

Fix: 240391954
Test: manual
Change-Id: I7d93134461a5a64d4bdadaa640e4accbec5624a4