fix: add lang="ts" to Svelte script tags using
TypeScript syntax
Two Svelte components were using TypeScript type annotations (ReturnType<typeof setTimeout>)
but their script tags were missing the lang="ts" attribute. This caused Vite/Svelte to parse
them as plain JavaScript, resulting in parse errors.
Fixed files:
- src/lib/components/admin/Users/UserList.svelte
- src/lib/components/channel/ChannelInfoModal/UserList.svelte