Initialize (idempotent) and return the process-wide server-side provider. Prefer this over
getServerFeatureFlagProvider() anywhere off the request/job path: the bare getter never
initializes, so using it without a preceding ensureServerFeatureFlagsInitialized() silently
evaluates flags against an uninitialized provider (everything falls to defaults).
Initialize (idempotent) and return the process-wide server-side provider. Prefer this over
getServerFeatureFlagProvider()anywhere off the request/job path: the bare getter never initializes, so using it without a precedingensureServerFeatureFlagsInitialized()silently evaluates flags against an uninitialized provider (everything falls to defaults).