The kiro table in DEFAULT_PRICING was missing models the Kiro registry serves
(most visibly claude-sonnet-4.6), so getPricingForModel() returned null and their
usage cost was reported as $0.00. Adds the missing rows.
Integrated into release/v3.8.25.
Co-authored-by: diegosouzapw <diegosouza.pw@gmail.com>