feat(jtk): filter users search to human, active accounts by default

[rianjs]

Current behavior

jtk users search returns all account types and all activity states. A search for a common letter returns a mix of human users, bots, integrations, and service accounts alongside actual people.

Desired behavior

By default, jtk users search should only return:

• Human accounts (accountType=atlassian) — excludes bots, app integrations, and JSM customer portal accounts
• Active accounts — excludes deactivated users

The Jira Cloud /user/search API supports both filters natively.

Related

• Parent issue: feat(jtk): minimize default table output for token efficiency #212