message: chore(theme): remove unnecessary check
diff: @@ -141,7 +141,7 @@ export const resolveMultiSidebarItems = (
  const matchedConfig = sidebarConfig[base];
  return matchedConfig
  - ? resolveArraySidebarItems(matchedConfig ?? [], headingDepth, base)
  + ? resolveArraySidebarItems(matchedConfig, headingDepth, base)
  : [];
  }
  }
  