Fix Prisma JSON typing in V1 actions

src/lib/room-actions.ts

@@ -1,6 +1,6 @@
 "use server";
 
-import { RoomVisibility } from "@prisma/client";
+import { Prisma, RoomVisibility } from "@prisma/client";
 import { revalidatePath } from "next/cache";
 import { redirect } from "next/navigation";
 import { prisma } from "./prisma";
@@ -98,7 +98,7 @@ export async function resetPersonalRoom(formData: FormData) {
   await prisma.$transaction([
     prisma.mediaSource.deleteMany({ where: { roomId: room.id } }),
     prisma.roomMessage.deleteMany({ where: { roomId: room.id } }),
-    prisma.room.update({ where: { id: room.id }, data: { currentState: null } }),
+    prisma.room.update({ where: { id: room.id }, data: { currentState: Prisma.JsonNull } }),
     prisma.auditEvent.create({
       data: {
         actorId: user.id,