message: fix: don't mutate data object
diff: @@ -231,12 +231,6 @@ export class SlashClient extends HarmonyEventEmitter<SlashClientEvents> {
  const cmd =
  this._getCommand(interaction as SlashCommandInteraction) ??
  this.getHandlers().find((e) => e.name === '*')
  - if (cmd?.group !== undefined)
  - (interaction as SlashCommandInteraction).data.options =
  - (interaction as SlashCommandInteraction).data.options[0].options ?? []
  - if (cmd?.parent !== undefined)
  - (interaction as SlashCommandInteraction).data.options =
  - (interaction as SlashCommandInteraction).data.options[0].options ?? []
  if (cmd === undefined) return
  