refactor(match2): allow passing the GameRow only

[Rathoz]

Summary

Allow setup to pass only GameRow Widget in Custom Match Summary. Set it up on chess as well.

How did you test this change?

tested together with the 4th PR in the stack

[Copilot]

Pull request overview

This PR refactors the shared MatchSummary base implementation to support customizing game rendering by providing a GameRow component directly (instead of requiring createGames / createGame), and updates the Chess wiki implementation to use that new hook.

Changes:

• Extend CustomMatchSummaryInterface and default body rendering to support CustomMatchSummary.GameRow.
• Refactor the default body builder to render games via GameRow when present (falling back to createGames / createGame).
• Update lua/wikis/chess/MatchSummary.lua to provide GameRow and remove its custom createGames implementation.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
lua/wikis/commons/MatchSummary/Base.lua	Adds GameRow support and routes default game rendering through it when available.
lua/wikis/chess/MatchSummary.lua	Switches Chess match summary customization to provide GameRow instead of createGames.

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