chore: finalize world cup bracket teams

[amilz]

update world cup example w/ final world cup team & tests

[greptile-apps]

Greptile Summary

This PR finalizes the World Cup example bracket data. The main changes are:

• Separates fixed FIFA seed labels from real team display names.
• Replaces the default team list with the final 32 bracket teams.
• Adds country-code mappings for newly listed teams in the webapp.
• Updates tests for the final team-to-seed slot mapping.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
games/world-cup/pinocchio/clients/typescript/src/fifa-2026.ts	SLOT_LABELS now consistently store FIFA group-position seeds, with validation for the seed format.
games/world-cup/pinocchio/clients/typescript/src/teams.ts	TEAM_NAMES now contains the final 32 display teams while preserving bracket slot order.
games/world-cup/pinocchio/webapp/src/components/bracket/teams.ts	The webapp team-code map now includes codes for the newly added final bracket teams.
games/world-cup/pinocchio/clients/typescript/test/fifa-2026.test.ts	Tests now check seed labels, distinct team names, and each final team-to-seed slot.
games/world-cup/pinocchio/clients/typescript/test/bracket-display.test.ts	Display-name tests now expect finalized team names instead of seed placeholders.

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