Trust getPrefix()'s result instead of re-checking startsWith(prefix), which duplicated logic and broke prefixCaseInsensitive

Author: Daaisukidayo

dist/handlers/events/messageCreate.js

@@ -13,7 +13,7 @@ export default new DiscordEventHandler({
     listener: async function (message) {
         const prefix = await this.getPrefix(message)
         const content = message.content.trim()
-        const hasPrefix = !!prefix && content.toLowerCase().startsWith(prefix.toLowerCase())
+        const hasPrefix = !!prefix && content.startsWith(prefix)
         const rawArgs = (hasPrefix ? content.slice(prefix!.length) : content).trim().split(/ +/g)
         const name = rawArgs[0]?.toLowerCase()