Fix filterOptions ObjectId casting error and bump version to 0.4.20

Fixed incorrect usage of resolveID in filterOptions where { id } was passed instead of id directly. This caused ObjectId casting errors when the id parameter was a populated object.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/collections/Emails.ts

@@ -206,7 +206,7 @@ const Emails: CollectionConfig = {
         readOnly: true,
       },
       filterOptions: ({ id }) => {
-        const emailId = resolveID({ id })
+        const emailId = resolveID(id)
         return {
           'input.emailId': {
             equals: emailId ? String(emailId) : '',