fix: add publish and unpublish MRInternal overloads for Fragment

MRActions already defined publish and unpublish for Fragment, and the
plain client wires both via wrap() — but the MRInternal overload block
was missing them, leaving the overload resolution incomplete.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: tylerpina

lib/common-types.ts

@@ -961,6 +961,8 @@ type MRInternal<UA extends boolean> = {
   (opts: MROpts<'Fragment', 'create', UA>): MRReturn<'Fragment', 'create'>
   (opts: MROpts<'Fragment', 'update', UA>): MRReturn<'Fragment', 'update'>
   (opts: MROpts<'Fragment', 'delete', UA>): MRReturn<'Fragment', 'delete'>
+  (opts: MROpts<'Fragment', 'publish', UA>): MRReturn<'Fragment', 'publish'>
+  (opts: MROpts<'Fragment', 'unpublish', UA>): MRReturn<'Fragment', 'unpublish'>
 
   (opts: MROpts<'Template', 'getMany', UA>): MRReturn<'Template', 'getMany'>
   (opts: MROpts<'Template', 'get', UA>): MRReturn<'Template', 'get'>