[search]Sorting by popularity in dashboard / chart list

[zuzana-vej]

Is your feature request related to a problem? Please describe.
The search output is sorted by last modified but what's more helpful generally is which dashboard is seen by a lot of people - sorting by popularity makes more sense.

Describe the solution you'd like
When searching for a dashboard by name give the ability to sort results by popularity or usage count, rather than last modified date.

[issue-label-bot]

Issue-Label Bot is automatically applying the label #enhancement to this issue, with a confidence of 0.91. Please mark this comment with 👍 or 👎 to give our bot feedback!

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[junlincc]

🏷 search

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