[Fix] Ignore gamescope if enabled and not found instead of failing

[arielj]

This PR fixes #3341

Instead of failing with an error, ignore the gamescope setup if enabled but not found.

This can happen if gamescope was configured for a game and then uninstalled.

With this change it will just show a warning in the logs and still run the game as if the setting was disabled.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[Etaash-mathamsetty]

this diff is hard to read but if I read it right it looks fine

[arielj]

this diff is hard to read but if I read it right it looks fine

yeah, github is trying to be too smart, I just changed the return with a logWarning and moved the rest into an else (just added indentation to most of the lines there), github is going crazy but there's no other change on that part of the code apart of the extra indentation