Bot Channel Registration Bot Name availability check missing

[h2floh]

Validating CosmosDB, KeyVault and TrafficManager DNS but not Bot Channel Registration:

Error: Error issuing create request for Bot Channels Registration "mybotbot" (Resource Group "rg-mybotbot-global"): botservice.BotsClient#Create: Failure responding to request: StatusCode=400 -- Original Error: autorest/azure: Service returned an error. Status=400 Code="InvalidBotData" Message="Bot is not valid. Errors: The bot name is already registered to another bot application..  See https://aka.ms/bot-requirements for detailed requirements."

Request to add validation for Bot Channel Registration Name