bug: match cards show [0:0] instead of T/CT round wins

[lukepolo]

Summary

• The map total (e.g. 9–7) was correct, but the [T:CT] split next to each lineup stayed at [0:0].
• Side wins now go through matchSideWins: accept the T alias, sort by round number, trust score deltas when they move, and infer missing per-round sides from the current map assignment and MR.
• Hide the badge until at least one round can be attributed, so we do not fake zeros on live maps with no usable rounds.

Test plan

• Open a live match with a non-zero score: each lineup shows a T:CT split that adds up to its map score, not [0:0]
• Open a match still 0–0: the side-win badge is hidden
• Finished match with halves: splits still match the round history (including after halftime)
• npx vitest run tests/utilities/matchSideWins.spec.ts

[lukepolo]

Closing — the [0:0] on live maps was Hasura hiding match_map_rounds until Finished/Surrendered, not the web counter. That is 5stackgg/api#423. The match page already fetches rounds, so this client rewrite is not needed.