feat(redis): add DisableClientCommands to suppress CLIENT subcommands

Sahand Abbasirequested to merge
feat/redis-disable-client-commands into master

Add Config.DisableClientCommands (default false). When true, suppresses CLIENT SETNAME, CLIENT SETINFO and CLIENT MAINT_NOTIFICATIONS on connection init. Required for Redis servers that block the CLIENT family (e.g. GCP Memorystore).

Sourced from the disable_client_commands field on Fairway's infrapb.Redis.

Draft until Fairway!120 is tagged; pinned to the branch commit via go.mod for now.

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