[dash] In search results of 6 items or fewer, pressing down causes highlight to disappear

[Gerry Boland]

As of commit 651.

Steps to Repro
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1. Open the Dash
2. Perform a search which returns 6 Applications or fewer.
3. Press the down arrow key.

Expected Result
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Debatable. One of the following:
a) The first Application in the grid is highlighted
b) The text "Applications" is highlighted. This may help user know that they're about the enter the list of applications.

Actual Result
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Focus disappears. Pressing down again highlights the first application.

Since there are 6 or fewer icons, the "See X more results" expander is not needed and so hidden. However it appears you still can navigate to it with the keyboard.

Also occurs with the "Files & Folders" heading.