fix: tighten public work type routing

src/components/platform-entry/platformRecommendation.ts

@@ -1,6 +1,8 @@
 import {
   buildPlatformPublicGalleryCardKey,
+  isEdutainmentGalleryEntry,
   type PlatformPublicGalleryCard,
+  resolvePlatformPublicWorkSourceType,
 } from '../rpg-entry/rpgEntryWorldPresentation';
 
 const MS_PER_DAY = 86_400_000;
@@ -70,19 +72,11 @@ function getRecommendationMetric(
 }
 
 function getRecommendationSourceType(entry: PlatformPublicGalleryCard) {
-  if ('sourceType' in entry) {
-    if (
-      entry.sourceType === 'edutainment' &&
-      'templateId' in entry &&
-      entry.templateId
-    ) {
-      return `edutainment:${entry.templateId}`;
-    }
-
-    return entry.sourceType;
+  if (isEdutainmentGalleryEntry(entry)) {
+    return `edutainment:${entry.templateId}`;
   }
 
-  return 'rpg';
+  return resolvePlatformPublicWorkSourceType(entry);
 }
 
 function getRecommendationThemeTags(entry: PlatformPublicGalleryCard) {