Refactor: remove the "game" suffix from {gameRegion} and {gameLanguage}

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:test_tube: Branch testing instructions

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/shorten-game-tokens" [commands..] [options]

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.09%. Comparing base (3b715d6) to head (23a0011).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1166 +/- ## ========================================== - Coverage 93.09% 93.09% -0.01% ========================================== Files 103 103 Lines 6429 6427 -2 Branches 1520 1520 ========================================== - Hits 5985 5983 -2 Misses 421 421 Partials 23 23 ```

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