Co-pilot mint -> lit migration

[Copilot]

After merging master into the lit branch, the mint-components ShareLink hook was updated to pass engagementMedium and shareMedium: DIRECT to the GraphQL query. This change needed propagation to the lit-components equivalent.

Changes

• Updated ShareLink/useShareLink.ts query to include engagementMedium variable and shareMedium: DIRECT parameter, matching the new mint-components behavior

query getShareLink($programId: ID, $engagementMedium: UserEngagementMedium!) {
  user: viewer {
    ... on User {
      shareLink(
        programId: $programId
        engagementMedium: $engagementMedium
        shareMedium: DIRECT
      )
    }
  }
}

Analysis of other mint changes

All other changes from the master merge (76 files) were already reflected in lit-components — the lit hooks were built with the newer patterns (no optimizeCloudinaryUrl, no vanity URL customization, simplified programId handling, prettyAvailableValue for reward balance, no partnerFundsTransfer date fields, etc.). No additional propagation required.