Fixed TypeError when search term does not exist on pressing Home or End button #14274

[drashmk]

Description

this._getFirstVisibleElement() returns false if there are no elements in the search autocomplete. I added check if this._getFirstVisibleElement() does not return false before adding select class to the first element when Home or End buttons on keyboard are pressed.

Fixed Issues (if relevant)

#14274: Quick search fires error

Manual testing scenarios

1.Type a term into the quick Ajax search field (#search) that doesn't exist in the database
2. Press Home or End keyboard key
3. No TypeError: this._getFirstVisibleElement(...).addClass is not a function

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-cicd2]

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