StageWinningsCalculation does not handle walkover properly

[mbergen]

Describe the bug

As scores are stored as -1, the calculated games won/lost is not accurate for walkovers.

To Reproduce

https://liquipedia.net/ageofempires/The_League/Division_2#Prize_Pool

Observe winnings for R1 and Darkside after FF of Darkside

Expected Behavior

Scores that are not of status S should be ignored

Device

No response

OS

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Browser

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Browser version

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Additional context

No response

[hjpalpha]

so it should just ignore non score games, correct?

[mbergen]

so it should just ignore non score games, correct?

First fix should just ignore

Later we could add behavior similar to GTLs to allow awarding some games won for a walkober