CreateMatchDialog fetches data even when closed

[ihs7]

Problem

CreateMatchDialog is mounted in the DOM even when isOpen=false (rendered conditionally only on seasonId in matches.tsx:263 and index.tsx:164). The component unconditionally fetches two queries on mount:

• seasonPlayer.getStanding (create-match-drawer.tsx:89-91)
• season.getBySlug (create-match-drawer.tsx:87)

This means navigating to the matches page or the season dashboard triggers a standings fetch (which returns all players with stats) even though the user hasn't opened the Create Match dialog yet.

Observed behavior

Navigating to the matches page fires GET /api/trpc/seasonPlayer.getStanding immediately, even though the dialog is closed. On the dashboard this is less noticeable because standings are also used by other components, but on the matches page it's a pure waste.

Fix

Gate the queries in CreateMatchDialog on the isOpen prop:

const { data: season } = useQuery({
  ...trpc.season.getBySlug.queryOptions({ seasonSlug }),
  enabled: isOpen,
});

const { data: seasonPlayers } = useQuery({
  ...trpc.seasonPlayer.getStanding.queryOptions({ seasonSlug }),
  enabled: isOpen,
});

This defers fetching until the user actually opens the dialog.