Drop the self-referencing constructor type on ModPortalGetAllResponse

TypeScript 7.1 reports TS5088 for it: the inferred type of the static
Response property references itself through the declared constructor.
The other inline Response classes do not declare it either.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/lib/src/data/messages_mod.ts

@@ -251,7 +251,6 @@ export class ModPortalGetAllRequest {
 
 	// Define the Response class inline
 	static Response = class ModPortalGetAllResponse {
-		declare ["constructor"]: typeof ModPortalGetAllResponse;
 		constructor(
 			public mods: Static<typeof ModPortalDetailsSchema>[],
 		) { }