[NikGurev]

Summary

Fixes for the username docs examples.

Notable changes

• The search and Filter bar examples render the site next to the login, since the search already matched it.
• Highlighting works for queries that span the name, login and site: the query is split into words and each is highlighted. The search example filters by all words.
• Added a user without a last name to both examples.
• Added the username-compact example (isCompact) with a section in the EN/RU docs, and registered it in the dev app.

Review focus

• With the default format a user without a last name renders as M.; say if the example should use another fullNameFormat.
• The built-in kbq-pipe-select search still matches the whole query against name, so multi-word queries may find nothing there; only the highlight is per word.

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