refactor(rest): improve unauthorized readability (#2946)

Currently we use a double negation in the code which makes it harder to understand what it actually does.

Therefore the check has been changed to be understood easier.

packages/rest/src/manager.ts

@@ -694,7 +694,7 @@ export function createRestManager(options: CreateRestManagerOptions): RestManage
         'user-agent': `DiscordBot (https://github.com/discordeno/discordeno, v${version})`,
       }
 
-      if (!options?.unauthorized) headers.authorization = `Bot ${rest.token}`
+      if (options?.unauthorized !== false) headers.authorization = `Bot ${rest.token}`
 
       // IF A REASON IS PROVIDED ENCODE IT IN HEADERS
       if (options?.reason !== undefined) {