Fix(utils): Remove redundant comparison & bitwise operation (#4178)

Co-authored-by: Fleny <Fleny113@outlook.com>

packages/bot/src/utils.ts

@@ -1,11 +1,11 @@
 import type { BigString } from '@discordeno/types'
 
 export function snowflakeToBigint(snowflake: BigString): bigint {
-  return BigInt(snowflake) | 0n
+  return BigInt(snowflake)
 }
 
 export function bigintToSnowflake(snowflake: BigString): string {
-  return snowflake === 0n ? '' : snowflake.toString()
+  return snowflake ? snowflake.toString() : ''
 }
 
 export function snowflakeToTimestamp(snowflake: BigString): number {