Refactor reaction handling and tag response types for improved type safety

- Updated the event handler for message reaction removal to enhance type safety by specifying user types.
- Changed the return type of the buildTagReply function from MessageReplyOptions to InteractionReplyOptions for better compatibility with interaction responses.
- Adjusted embed handling in tag creation and update functions to use undefined instead of null for consistency.

apps/bot/src/modules/selfroles/reactions.ts

@@ -104,7 +104,7 @@ export function registerSelfRoleEvents(client: Client, context: BotContext): voi
     }
   });
 
-  client.on(Events.MessageReactionRemove, async (reaction: PartialMessageReaction, user: PartialUser) => {
+  client.on(Events.MessageReactionRemove, async (reaction, user: User | PartialUser) => {
     try {
       if (user.bot || !reaction.message.guildId) {
         return;

apps/bot/src/modules/tags/service.ts

@@ -1,4 +1,4 @@
-import { EmbedBuilder, type Guild, type GuildMember, type MessageReplyOptions } from 'discord.js';
+import { EmbedBuilder, type Guild, type GuildMember, type InteractionReplyOptions } from 'discord.js';
 import {
   applyTagPlaceholders,
   TagResponseTypeSchema,
@@ -69,7 +69,7 @@ export function buildTagReply(
   member: GuildMember | null,
   guild: Guild,
   args: string
-): MessageReplyOptions {
+): InteractionReplyOptions {
   const vars = buildTagPlaceholderVars(member, guild, args);
   const responseType = TagResponseTypeSchema.parse(tag.responseType);
 
@@ -154,7 +154,7 @@ export async function createTag(
       name,
       responseType: params.responseType,
       content: params.content ?? null,
-      embed: params.embed ?? null,
+      embed: params.embed ?? undefined,
       triggerWord: params.triggerWord?.trim() || null,
       allowedRoleIds: params.allowedRoleIds ?? [],
       allowedChannelIds: params.allowedChannelIds ?? [],