98f271f345
chore: remove unifiedStorageSearchSprinkles feature flag The feature flag is no longer needed because: - OSS: usageinsights code doesn't exist in OSS builds - Enterprise On-Prem: uses local SQL storage when enable_search=true - Cloud: explicitly configures sprinkles_api_server URL The sprinkles functionality now works automatically based on: - enable_search config (enforced true for unified storage mode 5) - sprinkles_api_server config (empty = local storage, set = remote API)